How do scientists monitor the populations of the threatened California red-legged frog? With careful listening and a little help from AI.
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It's considered the world's most polluted megacity. The air is so bad that a new report estimates that on average each resident loses 12 years of life. Here's what they're doing about it.
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The oil industry has a huge voice in this year's climate talks. But what are oil companies actually saying? And why does it matter? We break down their pledges and statements into plain English.
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Water contact closures have been issued for Imperial Beach Shorelines, Silver Strand Shoreline, Coronado Shoreline and Tijuana Slough Shoreline.
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For decades, government scientists have toiled away trying to make nuclear fusion work. Will commercial companies sprint to the finish?
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Advocates say human-driven climate change is hurting people's health worldwide–but taking action like reducing reliance on fossil fuels lowers risks immediately.
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Colorado's booming urban population flipped the state from red to blue, allowing a referendum on reintroducing wolves to pass. But that growing population now may be too big for them to thrive.
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The Indigenous Achuar people in Ecuador's Amazon rainforest sail in six solar-powered canoes. And it's not just to save money on fuel — the trees of the rainforest will benefit too.
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New EPA rules require oil and gas companies to slash climate-changing methane from their operations.
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Much of the state's water supply comes from snow that falls in the mountains during the winter and enters the watershed as it melts through spring.
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"It's a trillion tons of ice," as one expert told NPR. Now the largest iceberg in the world, A23a, is on the move after decades of being grounded on the seafloor.
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