In recent times, many young people have become less social and stay inside more often. What are the causes of this? How can young people be enabled or encouraged to interact with the outside world more?

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Because robots free most of us of different household chores.
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For example, they can vacuum the room, mop the dirty floor and mow the lawn outside the house.
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As a result, people become less active and this passive lifestyle can lead to obesity and cardiovascular diseases.

First of all, robots at home can result in passive lifestyle as these machines free most of us of different household chores such as vacuuming the rooms, mopping the dirty floor and mowing the lawn outside the house. As a result, people become less active and this passive lifestyle can lead to obesity and cardiovascular diseases.

First of all, if students go overseas to study, their country will have extensive pool of skilled workforce. This is because those students will have a chance to learn the latest trends and information from reputable universities in developed countries. The field of nanotechnology, for instance, is not popular in underdeveloped and developing countries and students can study this subject overseas. As a result, after receiving a degree they can return and develop those unpopular fields in their own countries thereby contributing to the improvement of the country.
Secondly, this development may make the country better known over the world. In other words, international students are more likely to spread the elements of their own culture in the host country. To illustrate, they can teach their peers how to prepare their national dishes, talk about local customs and traditions or travel around wearing their national clothes. As a consequence, people may become interested in this unknown country and even want to go there as a tourist.