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This is the TED Radio Hour.
Each week, groundbreaking TED Talks.
Our job now is to dream big.
Delivered at TED conferences.
To bring about the future we want to see.
Around the world.
To understand who we are.
From those talks, we bring you speakers and ideas that will surprise you.
You just don't know what you're going to find.
Challenge you.
We truly have to ask ourselves, like, why is it noteworthy?
And even change you.
I literally feel like I'm a different person.
Yes.
Do you feel that way?
Ideas worth spreading.
From TED and NPR.
I'm Manush Zomorodi.
And today on the show, small but mighty.
So I want you to touch your face.
Go on.
Touch it.
What do you feel?
Soft, squishy, maybe chafed.
It's you, right?
You're feeling you?
Well, that's not quite right.
You're actually feeling over 100 billion
bacterial cells on your face.
Those that are creating some of the aromas of body odor.
Stickyness.
You're feeling some of the fungi that have floated down from the rafters or ceiling
today.
Those that set off allergies.
You're likely coated with some bacterial cells that came from the fecal plumes that
arose out of the toilet the last time you flushed it.
Oh, yeah.
And there's at least two species of face mites that are squishing their way across your skin.
And they definitely had sex on your face last night.
This is Ann Madden.
She's a microbiologist and self-described micro-brangler who does not seem to be bothered
by what she just described.
We are an ecosystem.
And so just as we expect to have lots of different creatures living in a jungle, we expect to
have lots of different creatures living in our homes and on our bodies.
And while that's gross, it's also pretty cool.
Ann hasn't always been passionate about the microscopic jungle that surrounds us.
It certainly wasn't on her mind when she went to college.
But I had this opportunity to do an internship in the rainforest of Costa Rica.
So when I arrive in the jungle, I see these trees that are taller than cathedrals.
And there are these howling monkeys that sound like dying jaguars and these beautifully
vibrantly colored poison dart frogs that kind of sound like a baby duck everywhere.
And I am in love.
And as I get to help all of these different scientists study venomous snakes and poison
dart frogs and plants, I realize we know nothing about our beautiful, magnificent world.
And that the process of research is this puzzle, this adventure, and it never ends.
But it did end, at least for Ann.
She had to go home and back to school.
And I went back to Wellesley College in Massachusetts and everything was beige and boring.
And there were no poison dart frogs.
And I was as far away from the jungle as I could imagine.
But then I started research in a microbiology lab.
And I found out that I'd never left the jungle.
There were microscopic species everywhere, just beyond the line of sight.
And these species, we'd barely uncovered what they were.
Maybe we know 1 to 10% of what these species are.
And if you grow them on a petri plate, they erupt in colors and aromas and very strange
little behaviors.
And many of them can do remarkable things and have been doing remarkable things.
And yet they never get credit for it.
And so I think that's when I fell in love with microbiology.
I remember the first time I discovered and got to name a new species.
Ann Madden continues from the TED stage.
It was a fungus that lives in the nest of a paper wasp.
It's white and fluffy.
And I named it New Corps Nydacola, meaning in Latin that it lives in the nest of another.
I called up my dad and I go, Dad, I just discovered a new microorganism species.
And he laughs and he goes, that's great.
I hope you also discovered a cure for it.
Now my dad is my biggest fan.
So in that crushing moment where he wanted to kill my new little life form, I realized
that actually I'd failed him.
In my years, toiling away in labs and in people's backyards, investigating and cataloging
the microscopic life around us, I'd never made clear my true mission to him.
My goal is not to find technology to kill the new microscopic life around us.
My goal is to find new technology from this life that will help save us.
The diversity of life in our homes is more than a list of 100,000 new species.
Is 100,000 new sources of solutions to human problems.
I know it's hard to believe that anything that's so small or only has one cell can do
anything powerful, but they can.
Tiny organisms with extraordinary potential.
A single word that can pack a punch.
A passing moment that changes everything.
In a world of attention grabbing headlines and seismic global events, we sometimes forget
the little guy, the almost imperceptible but powerful forces around us.
And so today on the show, small but mighty.
Forget big and boisterous.
We are talking about things that are minuscule or fleeting but potent.
Like microbes, which can both hurt and help us humans.
We've lived in a time of a horrid pandemic, so I think we're all familiar with how powerful
and how devastating one microbe can be in this case a virus.
But many microbes around us are equally powerful, but they're not devastating.
So there are microbes in our dust bunnies that are the source of many of our antibiotics.
And they've been saving our loved ones for as long as we've known.
One of the first jobs that Ann Madden ever had was working in research at a pharmaceutical
company.
Our goal was to find new microbes with the idea being that these new microbes could create
novel antibiotics.
And so that's where I really learned my micro-brangling skills.
We were using new techniques to grow microbes from soil that had never been grown before.
And no one had ever explored them in the lab.
And indeed, these bizarre, slow-growing, tenacious little critters were creating novel antibiotics.
Though they haven't been commercialized yet, we were successful in finding them.
You knew what you were looking for then.
I mean, it's not like you're like, here's a new microbe.
Let's see what it does.
Like, what are some of the clues that you look for when you are hunting down microbes
that you think might have medicinal uses?
Yeah.
So part of it is the idea of guilty-buy association.
So other microbes that live in our soil are the source of many of our antibiotics that
we use today.
You'll actually know if they're in the soil because they produce the smell of fresh-turned-earth.
And so these microbes, you grow them in the lab and they actually look like tiny little
sheep that are adorable and fluffy.
And one strategy is to then look for species of microbes that are related, the idea being,
if your cousins can do it, maybe you can too.
Do you give them, like, bits of disease and see how they respond or how do you test it?
Yeah.
So there's ways of assessing whether a microbe can produce novel antibiotics.
And one of them is a gladiator test.
So you actually put them in a petri plate next to a microbe that causes disease.
So say you've got a microbe that's MRSA, right?
So it's a horrible staph infection.
And you can slather it on a petri plate and have it grow.
And then you come back the next day and you look to see who grew and who died.
Oh, wow.
Okay.
Battle to the finish.
Yeah.
So one hint that's not the end of the story by any means, but it gives you a clue that,
all right, this fluffy microbe has something that's killing off a microbe that causes disease.
So maybe we can isolate that something, extract it, and maybe you can do what no other antibiotics
could do before.
Okay, Anne, you have also been working on projects that are more about the simple pleasures
in life, like a good beer, which brings us to another microbe story that involves wasps.
Yeah.
So as soon as you start talking about wasp research, people my entire life, I said,
oh, what's good about a wasp?
Nobody likes wasps.
These are stinging creatures that often create nests in our eaves.
But it turns out that yeasts, microbes that we love because they make bread and beer and
all sorts of lovely flavors use wasps as airplanes.
We started with a pest.
Inside that wasp, we plucked out a little known microorganism species with a unique ability.
It could make beer.
This is a trait that only a few species on this planet have.
In fact, all commercially produced beer you've ever had likely came from one of only three
microorganism species.
Yet our species?
It could make a beer that tasted like honey.
And it could also make a delightfully tart beer.
In fact, this microorganism species that lives in the belly of a wasp, it could make a valuable
sour beer better than any other species on this planet.
This yeast could do what no other yeast species could do before it, which is make a sour beer
in record time, just a few weeks.
And so brewers could make sour beer more economically, and people could enjoy new flavors and understand
the benefits of biodiversity.
And with that weird little moment in time, we gave a yeast the ability to make beer for
the first time in 150 million years of its existence.
And so now just a few years later, brewing with these lactic acid yeasts is now commonplace.
And there's something magical about that.
I'm here to tell you that the next 100 years we'll feature these microscopic creatures
solving more of our problems.
And we have a lot of problems to choose from.
We've got the mundane, bad smelling clothes or bland food.
And we've got the monumental disease, pollution, war.
And so this is my mission, to not just catalog the microscopic life around us, but to find
out what it's uniquely well suited to help us with.
These creatures are microscopic alchemists, with the ability to transform their environment
with an arsenal of chemical tools.
This means that they can live anywhere on this planet, and they can eat whatever foods
around them.
This means they can eat everything from toxic waste to plastic.
I keep thinking about what you've mentioned a couple times now, which is plastic eating
microbes.
I mean, that is, we always hear about the plastic that goes into a landfill and is going to
be around for thousands and thousands of years.
Is there a possibility that actually maybe that might not be true, that if we could add
microbes, it would in some fashion break down?
Absolutely.
So, scientists have already found microbes that are incredibly adept at breaking down
plastics.
And the plastics that seem to last forever, that's really what they were designed to do.
And as we think about our future, we need to think about not just the microbes that are
going to break down plastic, but those that are going to help us build materials that
are more sustainable.
And so right now, there are also microbes that generate PLA or polylactic acid, which
is the plastic-like filaments that a lot of people are using in 3D printers.
And those are made by microbes.
Are they more biodegradable?
They are.
And there are groups that are now using AI and machine learning to enhance the activity
of those microbe-made enzymes that tear apart plastic.
And so it's going to be microbial skill sets and human ingenuity linked together to create
that better future.
When we return the most famous microbe of all, I'm Manusz Zomorodi and you're listening
to the TED Radio Hour from NPR.
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It's the TED Radio Hour from NPR.
I'm Anush Zumarodi.
And today on the show, small but mighty.
We were just talking to microbiologist Anne Madden, who spends her days exploring the
vast, colossal, positively cosmic universe of teeny tiny microbes.
If you were to take a sugar packet's worth of soil and you were to explore the microbe
species in there, you would find more microbial species in that sugar packet's worth of soil
than you would find in all of the zoos on this planet.
And if you were to take just another sugar packet worth of soil, you'd find a whole
another planet's worth of species.
This is the immense world that we live in at the microbial scale.
I do feel like the pandemic changed my relationship to microbes.
Maybe it made me a little bit paranoid in many ways.
And not just the idea that there is a virus circulating among us, but potentially many
scary microbes around us.
How do you feel like people's relationship with microbes has been changed by COVID?
Yeah.
So I think during the pandemic, particularly at the beginning, watched as the word microbe
brought chills to everyone.
And I saw it in young children too, where it was a lesson that was hard learned, you
know, microbes kill, they destroy, they bring with them sadness and isolation.
And I think as we navigate our microbial world, it's important to also teach children and
students that, again, not all microbes are evil.
And so while it's important that we use hand sanitizer and things like that to limit the
spread of certain microbes, we need to remember the plurality of these species.
And that there are microbes that we can play with in the soil and that that brings with
it health, not just kind of griminess or germiness of what we think of.
So when it comes to good microbes, do you worry that, you know, just as certain species
are going extinct?
Are certain microbes also in trouble?
Have we humans caused them harm?
Oh, so what keeps me up at night sometimes is thinking about all the microbes that have
gone extinct because we have no idea what they are.
We have no idea who they were or what they did.
And I don't just think about that in terms of those that are in our house that we might
have accidentally killed off with some kind of bleaching agent.
But I think about that in the world in terms of habitats.
And as we navigate worlds where we're clear-cutting forests, we don't really know all the microbes
that we've lost.
And there very well might be microbes out there that are going to create the solutions
to our future problems.
And so one of the reasons that I know a lot of microbiologists such as myself love uncovering
new species to science is that part of that discovery involves conservation.
We are asked when we name a species or are they required to put some of those cells into
a deep freeze in multiple countries.
So they are sitting in bio banks where they can be revived in the future.
And we don't necessarily know what any of those microbes are going to be doing right
now.
A lot of them sit just as specimens with Latin names that no one can pronounce.
But that doesn't mean that they'll always be that way.
There might be a future where they are revived and those cells will help people combat a
future pandemic.
Or maybe they'll help them grow furniture in space stations or something far more mundane.
But the key is that they still exist.
That's microbiologist Ann Madden.
She's the founder and chief scientist at the Microbe Institute.
You can see her full talk at Ted.com.
On the show today, how the little things in life can make a big difference, like the words
we use to express ourselves every day.
Our next guest studies how small variations in language may mean big distinctions in how
we experience the world.
And to demonstrate, let's play a little game.
Close your eyes.
Yes.
If you're driving, don't close your eyes.
Or operating another kind of motor vehicle, close your eyes.
Point southeast.
And southeast.
Okay.
Pointing.
Okay.
So if you do this in any kind of normal room full of westerners, I want you to close your
eyes and point southeast.
Now keep your eyes closed.
And then you have people open their eyes.
They will immediately see that they have pointed in every possible direction.
I see you guys pointing there, there, there, there, there.
I don't know which way it is myself.
You have not been a lot of help.
And I do this to point out that there can be really big cognitive differences between
groups of people.
And I've had a chance to work in an Aboriginal community in Australia where they could do
this task very easily.
I could ask a five-year-old girl, hey, can you point southeast?
And she would point immediately and without hesitation.
And that's a big difference compared to, say, a room full of distinguished scientists.
So I'll point in different directions.
This is cognitive scientist, Lara Boroditsky.
And I study how humans get so smart, how languages and cultures that we have help us think the
way that we do.
So Lara, it may not seem obvious to some of us.
But what do you think this exercise of pointing southeast says about how language influences
the brain?
Well, our languages and cultures teach us to pay attention to certain things and not
to other things.
There's basically an infinite set of things that we could possibly take in process.
But our brains can't process all the information, can't take in all the information.
So we have to make some choices.
And one of the ways that we make those choices are by the things that our languages and cultures
require of us.
So in this Aboriginal community in Australia that I mentioned, they, instead of using words
like left and right to give directions or to talk about the body, they use cardinal directions
more or less north, south, east and west.
And they use these directions at all scales.
So for example, in some languages like this, like in Guea Yimatir, you would even say,
there's an ant on your southwest leg.
You would say, you know, move your cup to the north northeast a little bit.
In Kuktai or this language that I had a chance to work on, the way you even say hello is
which way are you going?
And the answer should be something like north northwest and the far distance.
How about you?
So imagine as you're walking around your day, every person you greet, you have to report
your heading direction.
Here's Lara Bora-Ditzki on the TED stage.
That would actually get you oriented pretty fast, right?
Because you literally couldn't get past hello if you didn't know which way you were going.
In fact, people who speak languages like this stay oriented really, really well.
They stay oriented better than we used to think humans could.
We used to think that humans were worse than other creatures because some biological excuse,
oh, we don't have magnets in our beaks or in our scales.
Now, if your language and your culture trains you to do it, actually you can do it.
So for me, whenever I come across an example like this, the biggest lesson for me is to
not underestimate the potential of the human mind, not just to say that the things that
I can do or the things that I can imagine, those are the limits.
Which allows us to recombine elements in infinite new ways and create new ideas on the spot.
So right now I could say, imagine a giraffe river dancing at a pancake while solving differential
equations, right?
You've never had that thought before?
No.
No, I'm glad.
Happy to say it.
Maybe it's not the most useful thought.
But there are so many other thoughts like that that people throughout history have had
and all of a sudden we have interesting ideas about time travel that make us engage with
the future in different ways.
So this ability to think beyond what is physically present and imagine and work in the realm
of the abstract is one of the things that language opens the door to.
You are really the latest in a long, centuries long line of people who have been asking this
question, does language shape the way we think?
Why is this been such a debated topic?
Because when I remember the first time thinking about it, I just assumed it did, but actually
this is not something that anyone agrees on how it works.
Well, I think often we disagree with ourselves about it.
I think all of us have both intuitions.
And so the idea that language shapes thought is very similar to the idea that physical
exercise is changes the way that your body looks and acts, right?
When you speak a language, you're practicing paying attention, you're practicing categorizing
something every day constantly.
And so it would be, in fact, the most surprising thing that the thing that you do all day every
day, this practice of speaking language, would have no influence on your brain.
And for me as a scientist, what's interesting is to figure out what are the times that language
shapes thought meaningfully and what are the times that it doesn't?
And so I think one of the reasons that this idea has gotten new life in the last 20 or
30 years is because we started using experimental methods, like real scientific experimental
methods rather than just arguing back and forth about our intuitions.
One of your critics, John McWhorter, the linguist, he said, well, the gradual consensus is becoming
that language can shape thought, but it tends to be in rather darling, obscure psychological
flutters.
It's not a matter of giving you a different pair of glasses on the world.
Is this a small discovery that you're making or would you beg to differ?
Obviously, I would beg to differ because there are many different ways you could ask how
deep, big, important differences are, and there are studies that reveal really big interesting
differences of different kinds.
So for example, if we look at color perception, different languages have different words for
colors, color boundaries in different places, we can find that language influences even
these tiny perceptual decisions that are so early on and so kind of stupid, like a pigeon
could make these decisions, and yet somehow even in these smart human brains, language
is making a difference in how you tell the difference between two patches of blue, for
example.
Now, that tells us that language can have an extremely early influence and cognition,
and if it can influence something very early, that means it's influencing all of the other
things downstream.
Languages also differ in how they describe events, right?
So you take an event like this, an accident, in English it's fine to say he broke the vase.
In a language like Spanish, you might be more likely to say the vase broke or the vase broke
itself.
If it's an accident, you wouldn't say that someone did it.
Now this has consequences.
So we show the same accident to English speakers and Spanish speakers.
English speakers will remember who did it because English requires you to say he did
it, he broke the vase.
Where Spanish speakers might be less likely to remember who did it if it's an accident,
but they're more likely to remember that it was an accident.
They're more likely to remember the intention.
So two people watch the same event witness the same crime, but end up remembering different
things about that event.
This says implications of course for eyewitness testimony.
Language guides are reasoning about events.
So another example that's coming to mind for me, and tell me if this fits, it's the use
of gendered pronouns in the US.
So one of my daughter's friends uses non-binary pronouns, they, them.
And my daughter and I were talking to my mother about this friend and my mother was getting
so confused every time we referred to them because she thought we were referring to multiple
people.
And it made me think like, does this come down to a generational thing?
The way we change the way that we use language, the way we think about the gendered sex of
someone that is changing, does this example fit into what you're talking about?
Absolutely.
Yeah, it's a wonderful example, and it's another wonderful example of how whatever it is that
we're used to seems to be the way that things naturally should be.
So for example, in English, we mark gender on third person singular pronouns.
So he, she, his, her.
We don't mark gender on first person pronouns.
We only have I.
We don't mark gender on second person pronouns.
We only have you.
So in fact, most of English pronouns are gender neutral.
It's just in a third person singular that we mark gender, but proposing that there could
be a new pronoun or proposing that we could not mark gender on those pronouns causes some
people incredible pain.
And they will argue nothing will be understandable if we don't have gender.
But there are languages that mark gender on first person pronouns or at second person
pronouns or on plural pronouns, some languages don't mark gender at all.
Right.
Like, right.
Take a finish as an example.
There are no gender third person pronouns in finish.
And in experiments looking at, for example, Hebrew learning kids, English learning kids
and Finnish learning kids, it turns out that kids learning Hebrew is their first language.
Figure out whether they themselves are a boy or a girl earlier.
In Hebrew, even the second person pronoun is gendered.
So the word for you is gendered.
English is somewhere in between.
And then Finnish kids take about a year, an extra year before they can reliably classify
themselves with boys or girls.
And so that's an indication of language forcing you to pay attention to some dimension that
you may want to think about it a different way.
And so what may seem like a very small difference to one person might seem a really big deal
to someone else.
Of course, if it applies to you, it's going to be a lot more important and you may feel
like the language that you're being forced to speak is constantly forcing you into one
category or another that doesn't fit.
And that has always been the way language change comes about.
People feel like the current language that they're speaking doesn't fit their thinking,
doesn't fit the way that they want to be in the world.
And so they start trying to change the language and inviting other people to also think in
this new way.
And thinking in new ways is painful.
So what would you say the goal then is of your research?
I mean, why should someone just listening to the show know this?
What do you think it does for them?
Well, I think whenever you're looking at another culture and other language, the most
important thing you could learn is about yourself in your own language and your own culture,
right?
So take the mirror and turn it on yourself and say, why do I think the way that I do?
Why would I be surprised that someone thinks differently?
I have been practicing speaking in this way, thinking in this way in my whole life.
And often we assume that whatever it is that we're used to is the way that things have
to be.
But actually we have many more options.
And so for me, it is always an invitation to one, examine the assumptions that I have
and why is it that I think the way that I do?
How could I think differently?
How do I want to think?
And then you can learn a lot and you can expand your own thinking.
That's Lara Boroditsky.
She's a professor of cognitive science at the University of California, San Diego.
You can see her full talk at TED.com.
On the show today, small but mighty.
I'm Anush Zamorodi and you're listening to the TED Radio Hour from NPR.
We'll be right back.
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I'm Anush Zamorodi.
Today on the show, small but mighty.
And now, a story for you about the simple but often difficult act of asking for help.
And we'll start with a precocious kindergartener named Sam who was very independent.
I just remember him being very responsible and someone who you can really almost count
on if you can imagine counting on a five-year-old.
This is Ye Eun Kim.
She was Sam's kindergarten teacher.
As a five-year-old, tying your shoelaces can come as a big challenge.
But Sam was able to even help other kids tie their shoelaces.
He was a leader and a lot of the other students would go to him for help all the time.
And what about Sam?
What would he do if he needed help?
Like, let's say he spilled something or he had an accident.
Yes.
So parents of young children would usually bring one or two extra change of clothes just in
case you spilled something.
And when that happens, they would oftentimes tell the teacher.
But what I noticed about Sam was he would never come to me for help.
But all of a sudden, maybe after lunchtime or after he'd been to the bathroom, he would
have different shorts on, for example.
So later when I started paying more attention, then I could really see just how much he was
doing things on his own.
Are you like, I don't even need to think about saying I can concentrate on the other kids
because he's got this.
He's going to be just fine.
Strangely, I think the opposite happened.
You know, other kids who were very vocal about not being able to do something, it's very
easy to catch and help them.
But for a kid like Sam, I didn't want to miss those little subtle signs.
Yeun was always trying to pick up on those signs, those moments when a child needed help,
like if they fell down.
Yes.
When a kid would fall down, they wouldn't start crying immediately.
There was a few seconds of buffering that was happening, where the kid would send up
kind of confused as to what just happened before he or she would have an emotional reaction
to it.
And most of the time it wasn't because they were injured, it was more because of the shock
and that kind of sense of reassurance that they could get from the teacher or please
console me that kind of of a feeling almost.
And as a new teacher, Yeun really wanted to be that person to reassure them.
She was just waiting to share one of those moments with a student.
Yes.
I kind of felt that, but when I saw that happening over and over to other teachers but never
happening to me, that kind of became something that I really wanted for me to achieve in
a way.
And then one day I heard one of the students calling me saying, teacher, Sam fell down.
So I rushed to the indoor playground.
Where Sam was looking puzzled and kind of confused and he turned around and looked at
me and his lips started trembling and just burst out crying.
So I rushed to him and gave him a hug and I said, oh, Sam, it's okay.
What happened?
Does it hurt?
And it lasted only a few seconds, but that moment kind of impretive in me as that feeling
of, wow, this connection finally happened.
And you felt needed?
Yes.
I felt needed.
I think the fact that it was also Sam made it a bit more special.
After that year, Yeun moved on from teaching and she didn't really think about Sam that
much.
Eventually she landed a job managing volunteers for a nonprofit and she loved it.
I found the work very enjoyable and it was so much fun.
And I think that was the beginning of me justifying to myself that, hey, you know, 14, 16 hour
days are fine as long as I'm having fun.
And if you're actually having fun, is it work?
So I started losing time that would help me be me outside of work.
And kind of like Sam, Yeun did not want to ask for help.
Instead, after a long day, she would blow off steam by going out.
Exactly.
And that's how it kind of started.
At the end of a very long work day, look for other friends who've had long days and
have a drink and that would lead to a few more drinks and a few more drinks.
Eventually it got to a point where I didn't know what to do with myself if I wasn't working
or if I wasn't out drinking with friends.
I really thought that I was doing it all.
I was kicking butt at work.
I was the entertainer in my friend groups.
Even if there was a big work day tomorrow, I would go and still be able to perform well
at work.
At that time, I really didn't see it as a problem.
I should have.
Now I know that I was a very high functioning alcoholic.
A sign that should have told me you should seek help was that I would often have blackouts.
One morning after one of her blackouts, Yeun woke up with a big cut on her foot and no
idea how it happened.
She could only remember the previous night in brief flashes.
The flashes that I did remember were horrifying.
I was extremely frustrated and afraid, almost in a state of paranoia and crying for help.
I don't know what, but crying and yelling for help.
So did you have a person in your world then, like Sam found in you, this person who you
could be vulnerable with, he could ask for help?
I think when that moment happened, I couldn't see the help.
I had friends who were around me.
We had gone to dinner, but I was still in that buffering phase.
Like Sam, I was just kind of standing up for what had happened.
I think I was trying to figure out how to get myself out of this mess.
So when my friend noticed that I was not really participating in conversation or answering
questions, he removed me from the place.
We went outside of the restaurant.
That's where he had to shake me, shake me and said, can you do this?
And I had to say, no I can't.
And can I please help you?
And can I please get the other people around you to help you as well?
And when I was finally able to say, yes, I do need the help, it really felt like almost
like an out of body experience where I could see myself being bubble wrapped by all the
people around me.
And it just felt so light.
There were so many people already and already helping me that I just didn't notice beforehand.
I think for some of us who see ourselves as very independent and you'll notice I'm including
myself in this question, admitting vulnerability feels weak.
It does.
Did that change for you?
Yes.
I wasn't really sure if I wanted to so openly talk about this because it was really me admitting
to people that I work with on a daily basis to say I have struggled with alcohol abuse
and have burned out.
So I really didn't know how it would come across.
I didn't want this to be a way for other people to think of me differently.
But after sharing the story, I'm kind of relieved that people don't look at me the same way that
they did before.
I'm not just this bubbly, independent person that has everything together.
Yes, I am all of that, but also I'm deeply flawed and I'm struggling.
So when I felt like, oh, yes, I do need to get professional help.
I sought out a therapist.
And after sharing the story, so many people were coming to me asking for advice on how
did I look out for my therapist?
How is therapy?
That really made me feel like, oh, I did the right thing of being a little courageous
to share the story because so many people came asking me for help afterwards.
I mean, that's huge.
Yeah.
Especially from the Asian context where going to therapy is still very taboo.
It was really encouraging to see people be more open about it with me.
To me, this tiny little moment of you and Sam locking eyes, it's like a tiny little push
of a domino.
It sets off this cascade.
And then to see the tables turned as an adult, it sounds like this moment of accepting the
offer of help from your friend was also a huge turning point for you.
Yes.
You would imagine that if someone comes you for help and looks to you in Christ and looks
very hopeless, that somehow you are the person in the position with the power.
But very weirdly in that moment, when Sam looked at me, it didn't feel that way.
But rather, this is such a privilege.
He had something so powerful and he was willing to give it to me by asking me to be the one
to help him.
It's really just a four letter word help.
But when you say it, it's powerful.
That was Ye Eun Kim.
You can watch her talk at Ted.com.
On the show today, small but mighty.
We started off the episode with the tiniest organisms, microbes, and now we want to end
with another critter, rats.
Over the past 25 years, rats have been crucial to helping sniff out land mines in former war
zones.
But where on earth did the idea come to recruit lowly rodents to do this life saving work?
Industrial engineer Bart Witteens explained on the TED stage in 2010.
I'm here today to share with you an extraordinary journey, extraordinary rewarding journey actually,
which brought me into training rats to save human lives by detecting land mines.
As a child, I had a passion for rodents, I had all kinds of rats, mice, hamsters, gerbils,
squirrels, you name it, I bred it and I sold them to pet shops.
I became an industrial engineer, engineering product development, and I focused on appropriate
detection technologies, actually first appropriate technologies for developing countries.
I started working in the industry, but I wasn't really happy to contribute to a material consumer
society.
I quit my job to focus on a real world problem, land mines.
Two thousand people, every month, are killed or maimed by mines around the world.
We're talking 95 now.
Princess Diana is announcing on TV that land mines form a structural barrier to any development.
It is my sincere hope that by working together we shall focus world attention on this vital,
but until now largely neglected issue.
As long as these devices are there or there is suspicion of land mines, you can't really
enter into the land.
Actually, there was an appeal worldwide for new detectors, sustainable in the environment
where they needed to produce, which is mainly in the developing world.
We chose rats.
Now why would you use rats?
Rats have been used since the 50s last century in all kinds of experiments.
Rats have more genetic material allocated to affection than any other mammal species.
They're extremely sensitive to smell.
Moreover they have the mechanisms to map all these smells and to communicate about it.
Now how do we communicate with rats?
Well, we don't talk rats, but we have a clicker, standard method for animal training with
which you can reinforce particular behaviors.
First of all, we associate a click sound with a food reward, which is mashed banana and peanuts
together in a syringe.
Once the animal knows click food, click food, click food, click food, so click is food, we
bring it in a cage with a hole, and actually the animal learns to stick the nose in the
hole under which the target sent this place, and to do that for five seconds, five seconds
which is long for rats.
Once the animal knows this, we make the task a bit more difficult.
It learns now to find the target smell in a cage with several holes, up to ten holes.
Then the animal learns to walk on a leash in the open and find targets.
The next step, animals learn to find real minds in real mind fields.
They are tested and accredited according to the International Mind Action Standards, just
like dogs have to pass a test.
There's a number of minds placed blindly, and a team of trainer and their rat have to
find back all the targets.
If the animal does it, it gets a license as an accredited animal to be operational in
the field.
Just like dogs, by the way.
Maybe one slight difference.
We can train rats at a fifth of the price of a trained, demanding dog.
This is our team in Mozambique.
They have a skill which makes them much less dependent on foreign aid.
With this small investment in a rat capacity, we have demonstrated in Mozambique that we
can reduce the cost price per square meter.
If you can bring in more rats, we can actually make the output even bigger.
We have a demonstration site in Mozambique.
11 African governments have seen that they can become less dependent by using this technology.
They have signed the Pact for Peace and Treaty in the Great Lakes region, and they endorse
hero rats to clear their common borders of landmines.
To conclude, I would actually like to say you may think this is about rats, this project,
but in the end it is about people.
It is about empowering vulnerable communities to tackle difficult, expensive, and dangerous
humanitarian detection tasks, and doing that with a local resource, plenty available.
So something completely different is to keep on challenging your perception about the resources
surrounding you, whether they are environmental, technological, animal, or human.
And to respectfully harmonize with them in order to foster a sustainable world.
Thank you very much.
That was Bart Wietians.
He is an industrial engineer, and he founded the organization Apopo 25 years ago, which
is still clearing landmines with help from rats in Mozambique, Angola, Zimbabwe, and
Cambodia.
And they are also training rats to detect tuberculosis.
You can find Bart's full talk at TED.com.
Thank you so much for listening to our show today.
Small, but mighty.
This episode was produced by James Delahussi, Katie Montilignon, Fiona Giron, and Susanna
Brown.
It was edited by Sana's Meshingpour, Andrea Gutierrez, and me.
Our production staff at NPR also includes Rachel Faulkner White, Matthew Clutier, and
Harsha Nahata.
Our fellow is Malvika Dang.
Our theme music was written by Romtine Arablui.
Our audio engineers were Ko Takasugi Chernovan, Josh Newell, and Joby Tansako.
Our partners at TED are Chris Anderson, Colin Helms, Anna Feline, Michelle Quint, Jimmy Gutierrez,
and Daniela Balorezzo.
I'm Anush Zamorodi, and you've been listening to the TED Radio Hour from NPR.
This message comes from NPR sponsor Deloitte.
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Connection.
That's why Deloitte focuses on bringing the right people and technologies from Deloitte
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See how at Deloitte.com slash US slash innovate.
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At NatDAQ, a