As the threat of terrorist attacks collides with Europe’s worst migration crisis since WWII, anti-migration sentiments are at an all-time high. With the world closing its doors, the number of migrants is only set to increase. Experts predict upwards of 500 million people will be uprooted as a result of climate change—almost half of them from Sub-Saharan Africa. Invariable rainfall and cyclical drought is already having a major impact on food security in this region where 80 percent of the growing population is dependent on rain-fed agriculture. Join New York Times columnist Thomas L. Friedman and senior producer for National Geographic’s “Years of Living Dangerously” Sydney Trattner as they discuss their recent shoot in the remote regions of Senegal and Niger focusing on how climate change in the African Sahel impacts human migration.