In the United States, an estimated 645,000 men ages 20 to 50 have azoospermia, a condition in which no sperm are present in their ejaculate. Now, scientists are testing a potential treatment: ...

This is the moment a man scared off a huge bear which had invaded a picnic area — using a shovel. Derek Sears, 18, was enjoying a day at Pope Beach in South Lake Tahoe, California with his friends ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...