At one time:
There was a glacier a mile thick above the location of NYC.
At another time:
There were tropical rain forests and alligators in Alaska.
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So we dont need to ask whether climate change is happening or whether humans are causing it. Instead, we need to ask: what can we do?
Thousands of years ago, hunters in what is now the Mongolian Gobi desert carved ostrich petroglyphs in cliffs. They weren't carving them from travel photos...