“We the People” – A recent study funded by the Department of Homeland Security listed domestic right-wing groups as two of the top three greatest terrorist threats in America. Host Gianna Toboni investigates these so-called patriots, training and taking up arms along the border. “Countdown to Extinction” – Correspondent Isobel Yeung visits the Mozambique Channel and the Gulf of Mexico to get an idea of how much we’ve overfished our oceans, and what we can now do to reverse that trend.