nprfreshair:Rebroadcasting today: Elizabeth Kolbert author of The Sixth Extincti...nprfreshair:Rebroadcasting today: Elizabeth Kolbert author of The Sixth Extincti...January 24, 2015 · Woojaenprfreshair:Rebroadcasting today: Elizabeth Kolbert author of The Sixth ExtinctionIn The World’s ‘Sixth Extinction,’ Are Humans The Asteroid?
