Guest: Bill Streever, Ph.D.

Today on Focus, biologist Bill Streever will take us through history, mythology, geography, and ecology as he chases the iciest weather around the world's coldest locations. In his recent book Cold: Adventures in the World's Frozen Places, he recounts stories of Arctic swimming holes, ice age excavations, and hibernation research in perhaps this year's chilliest science book.

Guest: Charles Wohlforth.

Climate change is not merely a theory in the far North. It has already dramatically changed the daily lives of the native people living off the land and sea in the Arctic. Today on Focus, we're joined by journalist and author Charles Wohlforth to discuss how these high-latitude regions struggle to support its inhabitants, from natives relying on traditional knowledge to survive to scientists keen on decoding the patterns of climate change.