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Climate scientist explains why extreme weather is becoming catastrophic: "It's a threat multiplier"

Weather events like wildfires, heat waves, and hurricanes have become more extreme in recent years, with climate change working effectively "as a threat multiplier," explains climate scientist Katharine Hayhoe, author of "Saving Us: A Climate Scienti...

About: "Salon Talks" Politics

Members of Congress, journalists and analysts share their takes on Washington