Someone would invent a time machine that would allow us to go back from the day they were born or from the day dinosaurs were alive. We will have classes in a school and supervisors to make sure that everything runs according. To replace the teachers we will have large T.V. screens at the front of the class and that is what we will learn from. Everyone in the class will have lap-tops so that we can do all of our work on the computer and there will be no need for paper. You will hand in your homework by e-mail and everything else that requires paper.
Folks live longer healthier lives.
Things will go back to basics. We will enjoy a clean earth. Water will be cleaner than crystal clear. Fruits will be as nature intended, juicy wholesome and not full of pesticides or altered genetically. Animals will be harmless and friendly to each other and people.