The race to develop coffee that can survive climate change
Clip: 03/02/2018 | 7m 50s
What has driven tens of thousands of Salvadorans to leave home, many for the U.S.? El Salvador's coffee beans suffered a devastating disease five years ago, and now face an even greater existential threat: climate change. Special correspondent Fred de Sam Lazaro reports on how researchers there are trying to develop a plant that can adapt to warming global temperatures.