President Obama speaks about the post-election political climate and the fierce partisan fighting that dominated his presidency.

Thomas Morton does a piece on the unprecedented crisis of heroin addiction sweeping across America. Kaj Larsen takes a look at the growing pace of the United States' nuclear weapons program.

Ahmed Shihab-Eldin goes to Flint, Michigan to see a city plagued by both lead in its water supply and political inertia. In Libya, Simon Ostrovsky is embedded with Libyan soldiers fighting ISIS.

Gianna Toboni reports on the consequences of student debt in America, and Thomas Morton covers the emergence of fecal transplants as viable options for certain medical treatments.