From EARTH Magazine (AGI), March 20, 2017  --  The Arctic looks pretty inactive during the winter, but more may be happening than meets the eye.  According to a recent study, some carbon dioxide and methane are released during the early spring thaw, suggesting that critical processes are taking place during the Arctic winter. 

From Listenwise  --  Migration has been a huge part of human history. Experts agree that early humans started out in Africa and began to migrate out of Africa to different parts of Europe and Asia around 100,000 years ago. This migration occurred in waves but we don’t know why early humans left Africa. Recent research supports the theory that climate change may have been the force that drove early humans out.