A herd of African elephants instinctively formed an "alert circle" to protect the younger elephants at the San Diego Zoo ...

Impossible Bottle Flip Impossible Bottle Flip is a fascinating game in which players have to try to flip the bottle so that it falls vertically and steadily. Complex physical tasks and interesting ...

A bottle that, according to several experts, is impossible to fill and there is an explanation for this. We are talking about the Klein bottle, first described in 1882 by Felix Klein. It is a ...