The numbers you see on the box don't always work out in real life. LED bulbs do last longer, but those claims about five to 10 years are estimates based on internal testing -- and companies are always ...

Chinese astronauts aboard the Tiangong space station conducted a fascinating experiment. They lit a matchstick to show how ...

Cells at the bottom of a liquid medium begin levitating, then hovering at a particular height. With no physical contact, an ...