Gina McCarthy; Obama and Climate Change; Roger Martella; Robert Jordan

Gina McCarthy, head of the Environmental Protection Agency, describes the Obama administration's initiatives addressing climate change. Energy reporters Coral Davenport and Steven Mufson reflect on President Obama's efforts, both at home and abroad, to counter climate change. Roger Martella, former general counsel of the EPA under George W. Bush, analyzes the legal and political implications of Obama's policy on climate change. Robert Jordan reflects on his experience as U.S. ambassador to Saudi Arabia after September 11th, which he recounts in his book "Desert Diplomat."