58,000 gallons of oil were recently spilled in the San Francisco Bay...and much of it will never be cleaned up. On Please Explain: how oil spills harm the environment, and why they're so hard to clean up. Also, a look at two new films: "The Savages," and "Protagonist." Also: Dave Eggers discusses What is the What.

We want your favorite holiday cookie recipe! On Dec. 11, we're hosting a Christmas cookie recipe swap. Dig up your favorite recipe and submit here.