A year after the BP spill, cleanup workers are still asking questions about health risks. Can a federal study provide the answers? Need to Know’s medical correspondent reports.
BP oil spill
Carl Safina and Abrahm Lustgarten on the BP disaster and lessons learned
Reporter Abrahm Lustgarten and ecologist Carl Safina talk to Alison Stewart about lessons learned from the BP oil spill, one year later.

Lisa Margonelli on energy policy: ‘We can really change our behaviors’
Author and energy policy expert Lisa Margonelli joins Alison Stewart to discuss the small, incremental adjustments that we can make in both our behavior and policies to reduce our dependence on foreign oil.