As sunlight passes through the atmosphere, particles in the air scatter blue light more efficiently than any other color in the light spectrum, creating a blue sky. Learn more about the sky and light in this Brainstuff podcast.
Nov 21
What's the History of Skid Row?
<p>In downtown Los Angeles, the 50-block neighborhood called Skid Row is home to thousands of low-income people who live in tents, run-down hotels, and other temporary shelters on a permanent basis. Learn how Skid Row came about (and has persisted) in such a wealthy place in this ... Show More
11m 25s