Light is more than what we see. The Sun sends out a number of waves of light in different wavelengths. Find out about wavelengths and the electromagnetic spectrum. Science Trek is available to stream ...

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, ...

Veronica Then wore an electroencephalogram, or EEG, cap and stood in front of a black curtain with a white square placed behind her like a target. Studio lights beamed down from the ceiling as a panel ...

We spend a lot more time thinking about what colors to paint the walls of the rooms that we live in than we do choosing the colors of the light bulbs we use to light those spaces. And that is ...