Bill McKibben on climate change: “If we don’t solve it soon, we won’t solve it.”

In 1989, journalist and activist Bill McKibben published “The End of Nature” – a seminal book on the threat of global climate change. 30 years on, his new book has the sobering title, “Falter: Has the Human Game Begun to Play Out?” It ties together climate change with other, more recent, technological threats to our embattled species, and Bill talks to our partners at Amanpour & Co. to discuss where we go from here.