@CNN: 11,000 years ago, our ancestors survived abrupt climate change https://t.co/pJxWePn95j https://t.co/49pVMxlBWK
11,000 years ago, our ancestors survived abrupt climate change https://t.co/pJxWePn95j pic.twitter.com/49pVMxlBWK
— CNN (@CNN) March 27, 2018