The Pleistocene Epoch—with its glaciers, woolly mammoths, and Neanderthals—still looms large in Earth’s rearview mirror, having ended a mere 12,000 years ago. Now, a team of researchers posit that those hundreds of thousands of years of our planet’s history may have been chilly due to a cloud in space that briefly…
https://gizmodo.com/dense-interstellar-clouds-ice-age-earth-heliosphere-1851530101