Environment

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A new study suggests that the polar jet stream has been fluctuating more than normal as it passes over the parts of the Northern Hemisphere, and that's affecting weather in Europe and North America.

Search and rescue efforts continue in Santa Barbara County, Calif., after deadly mudslides killed at least 17 people and destroyed dozens of homes.

Flash floods swept down hillsides recently devastated by wildfires, highlighting the heightened risk of mudslides after firefighters contained the flames. Officials say 43 people are still missing, and experts are warning that more rainfall could cause more destruction.

Part 1 of the TED Radio Hour episode The Big Five.

About Tim Kruger's TED Talk

To tackle climate change, geoengineer Tim Kruger is developing technology that could remove large quantities of CO2 from the atmosphere. But he says it takes unprecedented cooperation to make it work.

About Tim Kruger

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The Northeast just emerged from a two-week cold spell. In Vermont, temperatures fell to negative 30 degrees Fahrenheit. And in such extreme cold, rural Vermonters have been quickly burning through a precious wintertime commodity - firewood.

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The federal government's top fisheries experts say that three widely used pesticides — including the controversial insecticide chlorpyrifos — are jeopardizing the survival of many species of salmon, as well as orcas that feed on those salmon.

It's a fresh attack on a chemical that the Environmental Protection Agency was ready to take off the market a year ago — until the Trump administration changed course.

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