This story is part of Covering Climate Now, a global journalism collaboration strengthening coverage of the climate story. The Earth’s climate has always been a work in progress. In the 4.5 billion years the planet has been spinning around the sun, ice ages have come and gone, interrupted by epochs of intense heat. The highest mountain range in Texas was once an underwater reef. Camels wandered in evergreen forests in the Arctic. Then a few million years later, 400 feet of ice formed over what is now New York City. But amid this geologic mayhem, humans have gotten lucky. For the past 10,000 years, virtually the entire stretch of human civilization, people have lived in what scientists call “a Goldilocks climate” — not too hot, not too cold, just right. Related Stories Why Obama's Climate Plan Failed. And How Biden's Could Succeed For These Young Evangelical Activists, Facing the Climate Crisis Is an Act of Faith Related Stories The 10 Most Bizarre … [Read more...] about Now Is Our Last Best Chance to Confront the Climate Crisis