American mastodons migrated many times across thousands of miles up and down the North American continent over 800,000 years due to climate change, before going extinct 11,000 years ago, according to a new study.
원문출처 : https://www.cnn.com/2020/09/01/world/mastodon-climate-change-study-scn/index.html
원문출처 : https://www.cnn.com/2020/09/01/world/mastodon-climate-change-study-scn/index.html