PolyConundrum

The facts on climate change -- and what to do about it

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In advance of Earth Day on April 22, National Geographic Magazine released its latest edition this week featuring the guide, “Seven Things You Need to Know about Climate Change.” It includes facts from scientists about the causes of climate change and how humans can help mitigate its consequences. For more, the magazine’s editor in chief Susan Goldberg joins Hari Sreenivasan.