As this question pop up all what my could think of is future yet the future is unpredictable as no one knows what may prevail tomorrow. 
Therefore, without much perception, I will go with the following themes, which are:
Technology will take over the world in more better ways,
As we always see even as at now things are really not the way it were as at yesterday, the technological methods is more and more approaching, then talking of 20 and 200 years. Humans and the technological aspect will so elaborate to the extent that things will not only be doing but speak and it get it own position.
Life Will have another form where things will be so amazed and enjoyable, going to places will be so easy and fluently as humans capabilities and abilities will grow and Advance.
20 and 200 years to come will be better than now, they will Discover a city which would be the most beautiful city in the world, but now the city is hidden in 20 and 200 it will be Discover.
In 20 and 20 years to come man will make life, in the sense that man can easily give life to another, and everything will be just as cool.