The Sun is green, actually. We'll go into why the blackbody effect means the Sun emits more green visible light than any other color, and why evolution and color perception mean it's ok to see it as yellow, anyway.

What if every light bulb in the world could also transmit data? At TEDGlobal, Harald Haas demonstrates, for the first time, a device that could do exactly that. By flickering the light from a single LED, a change too quick for the human...

Howcast -Find out what you can expect from a tarot card reading from expert Ellen Goldberg, M.A. in this Howcast video.

This video discusses the introduction of electric cars and the challenges faced in enforcing traffic rules, particularly regarding carpool lanes. It highlights a new infrared system that can accurately identify single occupant vehicles...

In a unique laboratory at the National Institute of Standards and Technology (NIST), vision scientists can simulate lighting from virtually any source, including incandescents, fluorescents or LEDs. With this capability, they can test...