Future
World is changing constantly. Each day is different so it's quite difficult to say what will happen and change in 10, 50, 100 years time - even in one day time world can change - if someone use Nuclear Bomb - one day - and everything will be over. One is certain world wouldn't be the same. We can't say exactly what will happen and change, but we can predict things which might change in the future.
There are many people who try to predict future e.g. Nostradamus or other fortunetellers but in my opinion that is one big bullshit. There is no reasonable explanation and proof that their claims are truth. In my opinion we can't predict exactly what will happen in the future (e.g. a date of apocalypse) but we can guess what grounds of peoples lives will change in the future. I think that there are few aspects few things which compared to present situation will be totally different. I mean communication as a form of transport and way of speaking between people, technology (and biotechnology), environment, medicine
In my opinion in the future environment will be more polluted. That process began hundreds years ago. End each year people produce more garbage, air is more polluted, ozone layer is bigger and bigger. Another problem is deforestation - people cut down huge areas of trees, green areas are smaller. Of course governments of high developed countries spend a lot of money for ecology and more and more money would be sacrificed for that but as the history showed it will be worse each day. Such vision of a world appeared in many movies in witch earth looks black and white - there is no plants ….).
Other very important thing is internet. It's very important now but in my opinion the internet or some kind of internet (because it can change a bit) will be common and main source of information, the best source of information - others medias as a TV, radio or newspapers won't play the same role as it is now - rather museum items.
Medicine will be more successful in a future, especially genetic researches will be very important. Scientist each day invent some new medicines, cures and medicine develops very fast. Of course some new diseases and viruses can appear (e.g. because of worse condition of environment - pollutions).
The most interesting and controversial research connected with medicine is cloning. And in the future it would be possible to clone a human being. As I said it's very controversial problem. Nowadays most of people say that it's immoral and it should be prohibited. And we have to consider why scientists want to clone a human being. The biggest argument is that they save somebody's life by crating e.g. fake hurt which would be exactly the same as a previous one. But ….
What else … school. In my opinion school as a building won't be popular. It would be connected with the increasing role of internet. So studying at home would be common.
The biggest problem in the nearest future will be terrorism. I think it won't disappear soon. I'm afraid that more and more terrorist bands would arise. It might be a main reason of wars etc.
So those are examples of things which would change. But there are thing which are the same for each century. For example poverty - and social differences between people. It begun at the down of the history, it is normal now and it won't change. People have always competed and tried to get a power. Even in the future people will be divided for rich and poor. Feelings like love, hate, jealousy would accompany human being all the time. Even in 100 years time the best form of spending free time will be riding on the bike and the best kid of music will be Heavy Metal.