Radio waves haven't turned up any signs of alien life, so astronomers are widening the spectrum of their search to include near-infrared light.
Did you know that florescent lighting affects the look of color (including makeup!)
Scientists tested eighteen reindeer with light, and found that their eyes responded to both visible light and ultraviolet.
What would it be like if our eyes evolved to see infrared light?
Touch the inside surface of a window on a cold day and you can see that glass is bad at keeping out cold. Why does glass work so well for building hothouses?
Why do regular incandescent light bulbs get hotter than fluorescent bulbs? Learn more on this Moment of Science.