How bright is too bright? We got our hands on the most powerful flashlight in the world, and it turns night into day! Can it blind, burn, or even melt things? Watch as we push this insane light to its ...

Most adults need seven to nine hours of quality sleep to wake feeling well-rested. But again, while sleep quantity is important, for sleep to be satisfying and refreshing, it must be of high quality — ...

Deep beneath the Dutch city lie vast subterranean spaces that have served as art canvases, air raid shelters and a strategic ...