You can watch it here: https://www.pbs.org/wgbh/nova/video/polar-extremes/ https://www.pbs.org/wgbh/nova/video/polar-extremes/ If you get blocked because of re

You can watch it here: https://www.pbs.org/wgbh/nova/video/polar-extremes/ https://www.pbs.org/wgbh/nova/video/polar-extremes/ If you get blocked because of region; New York works.