If you shone a flashlight beam from Earth, would you be able to see it from the moon? It depends. Find out why -- and get a lesson in how light works -- in this episode of BrainStuff.
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