The ability to survive if humans returned 2.5 million years ago
People will face many difficulties when they have to live in cold conditions and face many kinds of diseases.Can people turn back time?
A document published in Annalen der Physik shows that time does not exist only one way from the past to the future, but depends on the ability of people to store memories.Travel time in a scientific perspective
According to Einstein's special theory of relativity, the only three dimensions of time and dimension are closely related, said Paul Sutter, an astrophysicist at Ohio State