Scientists solved the mystery of will-o'-the-wisps by discovering that methane bubbles in marshes create lightning sparks when they touch.

If a red light isn’t changing to green, police and traffic advocates suggest pulling up to the intersection line, then rolling your vehicle back and forth to trip the light sensor in the pavement. If ...

“If you wanted to take a picture of the rocket as it flew past, you would have to take into account that the light from ...