Please Explain: Oil Spills

58,000 gallons of oil were recently spilled in the San Francisco Bay…and much of it will never be cleaned up. On today’s Please Explain: how oil spills harm the environment, and why they’re so hard to clean up.

Christopher M. Reddy is a scientist with the Woods Hole Oceanographic Institution. Debra L. Payton the National Oceanic and Atmospheric Administration helps coordinate oil spill cleanups.