Videos about the chemistry of color typically only scratch the surface of how electromagnetic radiation creates the beautiful rainbows of the world around us. But this Reactions video by the American ...

Dr. Mark Lindsay was 5 years old when he first learned that tree trunks were brown. "Up until that point, I believed leaves and trunks were all green. Just lighter and darker shades," Mark said. Mark ...

Is your green my green? Probably not. What appears as pure green to me is likely to look a bit yellowish or bluish to you. This is because visual systems vary from person to person. Moreover, an ...

The physical signs of fall begin when the leaves change color and start to fall from the trees. This transformation is triggered by shorter daylight hours and cooler temperatures. The process of ...