Wednesday, Jan. 3, 2024 at 9 p.m. on KPBS TV / Stream now with KPBS Passport + Encores Sunday, Jan. 7 at 9 p.m. and Tuesday, Jan. 9 at 4 p.m. on KPBS 2. Join scientists on the most ambitious Arctic research expedition of all time. Facing hungry polar bears, perilous sea ice cracks, and brutal cold, the team strives to understand the forces that are changing the region — and the world — forever.