Often sleep is exactly what we need to recover from overwork or writer's block or the inability to get anything done. And maybe if you're really lucky, the answer to what you're looking for will come while you sleep! Don...

A team of scientists led by José Córdoba from Yale University and Erich Astudillo from the University of Chile have developed a chemical that can kill all the cavity-causing bacteria in a person's mouth -in only 60 sec...