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Trees have an environmental record etched into their very wood.
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Scientists dig up ancient clams from the ocean 90 miles from the nearest beach.
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Lake mud from the Russian Arctic tells us that Earth's climate has oscillated in the past.
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Explore this spectacular, icy cave.
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With an onboard camera, "the prey drone" excels at filming the peregrine falcon.
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This family of peregrine falcons is taking advantage of urban Chicago's resources.
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Drop yourself into a modern-day swamp, and that's what the ancient Arctic looked like.
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What if carbon dioxide pollution were solid carbon chunks?
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Together, all the cars on Earth would leave quite the pile of carbon behind—every day.
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Carbon dioxide acts like a heat-trapping blanket, warming our planet.
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Warming ocean water is eating away at Greenland's glaciers from below.
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See how one small town’s survival is threatened by climate change.
