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Learn more at Microsoft.com slash M365 copilot. Thank you. For Scientific American Science Quickly, I'm Kendra Pyr Lewis, in for Rachel Feldman.

You're listening to our weekly science news roundup.

First up, the Trump administration announced last week it would be rescinding a scientific finding

that has served as a foundation for U.S. federal climate policy since 2009.

We are officially terminating the so-called endangerment finding,

a disastrous Obama-era policy that severely damaged the

American auto industry and massively drove up prices for American consumers.

To take us through what this could mean for U.S. Climate Action, we spoke to Andrea Thompson,

Senior Dusk Editor for Life Science at Scientific American.

Hello, Andrea.

Thanks for joining us today.

Thanks for having me.

So the basis for federal climate policy in this country has been something called the endangerment finding.

Can you tell us what this is?

Yeah.

So basically you start with the Clean Air Act.

So this is the legislation passed in the 70s that gives the EPA the authority to regulate air pollutants that affect human health. And so the endangerment finding is sort of the legal and scientific argument that, yes, greenhouse gases do affect human health. So greenhouse gases are the main one is carbon dioxide. Another

really important one is methane. These gases are released by combustion engines and cars and trucks,

...