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    • What drove Snowball Earth? A drop in a greenhouse gas

      EarthSky· 2 hours ago

      Carbon dioxide (CO2) is a greenhouse gas. More in the atmosphere warms the planet. Scientists believe low CO2 levels led to a complete glaciation of Earth about 700 million years ago. Scientists call this hypothetical global ice age a Snowball Earth.

    • WTF is AI?

      WTF is AI?

      TechCrunch· 17 hours ago

      The best way to think of artificial intelligence is as software that approximates human thinking. AI is also called machine learning, and the terms are...