How warmer winters affect our planet
Earth's polar regions are sensitive enough that a difference of one or two degrees in temperature can thaw a world of ice. Polar scientist, Marco Tedesco of Columbia University's Earth Institute has been studying these warmer winters that affect our poles and our planet. This segment is part of our ongoing series of reports Peril and Promise on the challenge of climate change.
Aired: 07/31/17Video has closed captioning.