Color is determined by a wavelength, your eyes, and your brain. What are light and color? It all starts with the Sun. The Sun puts out a lot of different waves of light, some of which we can see with ...

Can color affect the way we feel? Scientists say yes. Learn why McDonald’s uses yellow in its packaging and why stop signs are red. Science Trek is available to stream on pbs.org and the free PBS App, ...

Scientists have devised a new video system that reveals how animals see color, and us. By Emily Anthes Is the sky truly blue? Forget cerulean — a bright, clear sky is actually dominated by ultraviolet ...