Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Garage doors use springs to make it easier for us to open and close them, but they don't last forever. With a little know-how ...

The geometry of space, where physical laws unfold, may also hold answers to some of the deepest questions in fundamental ...

A recent graduate of the University of Minnesota, Nina started at CNET writing breaking news stories before shifting to covering Security Security and other government benefit programs. In her spare ...

In Lourdes, France, in 1844 a baby girl named Bernadette Soubirous was born. Bernadette’s family was very poor, and Bernadette was responsible for looking after and caring for her brothers and sisters ...