The most catastrophic wipe-out on Earth didn't happen to the dinosaurs.
원문출처 : https://www.cnn.com/2019/09/04/us/life-on-earth-wiped-out-2-billion-years-scn-trnd/index.html
원문출처 : https://www.cnn.com/2019/09/04/us/life-on-earth-wiped-out-2-billion-years-scn-trnd/index.html