President-Elect Joe Biden has unveiled picks for his cabinet. One in particular is a familiar name - John Kerry. The longtime Senator and former Secretary of State will serve as the climate envoy for national security in the Biden administration. Kerry's role will be prominent, as he will be the first member of the National Security Council to focus exclusively on climate change. Betsy Southerland, Former Director of Office of Science and Technology, EPA Office of Water and is a member of the non-partisan Environmental Protection Network, explains why President-elect Biden's selection of John Kerry as his 'climate czar' is significant not only for the U.S., but for the world as well.