(In fact, we know a lot of adults who forgo big gifts in favor of stockings only.) And while we’re still fans of the traditional fillings, such as tangerines, chocolate Santas, and gum ...

The research team believes the contagious nature of friendly behavior - such as grooming and play - may help to strengthen social bonds. They say there are several possible explanations for why adult ...

A civil aircraft has flown supersonic for the first time since Concorde. Dawn Aerospace says the Mk-II Aurora rocket-powered aircraft broke the sound barrier on its recent test flight. The flight, ...