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Olduvai III: Catacylsm
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Arctic methane emissions persist in winter

Arctic methane emissions persist in winter Summer and winter, wet and dry, high and low, the Arctic tundra continues to emit methane. Image: Bureau of Land Management (Delta WSR) via Wikimedia Commons Methane, a key greenhouse gas, is released from Arctic soils not only in the short summer period but during the bitterly cold winters […]

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Olduvai IV: Courage
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Olduvai II: Exodus
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