UpFront: Light pollution may be a more serious concern than you think. New evidence suggests that a lack of darkness in our urban night skies contributes to air pollution, making it a matter of public health. Yet Los Angeles keeps rolling out bigger, brighter signs.
In the Studio:
- The Huffington Post's self-professed nerd extraordinaire Cara Santa Maria comes by to talk NASA, Rover, and other things space.
- Rick Steves is a famous travel writer, but now he's famous for helping bring about the legalization of marijuana in Washington State.