After 20years everything will change.Or drinking habits,haircuts and fashion.
After 20 years people will be more intelligent and will have some kind of the things,which we can't understand now.The nature,houses,plants,people and animals will change like that ,we can't explain with words.I think that our life will have the best technologies.I think that after 20years we will fly on the cars and our house will be cleaned by robots.