The Difference Between Mammals and Birds

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Mammals and birds have been able to regulate body temperature using internal metabolism. We are able to have a high body temperature and a body prature that is constant. That's why if we get a fever, even if our temperature goes a little bit up, we feel really sick. And also, around the same time, these mammals were getting bigger brains, and they were developing milk to feed their babies. So it it was in the triassic period, then, about 225 million years ago, you had proper true mammals emerge on the scene.

In times of turmoil, it can be useful to take a longer view of history. Like, a LOT longer. Paleontologist and author of “The Rise and Reign of the Mammals” Stephen Brusatte joins Adam to explain how mammals took over the Earth hundreds of millions of years ago, and why we survived and achieve sentience when dinosaurs died out. Stephen goes on to discuss why taking a deep look at our history can help prepare us for the crises of the near future. You can purchase Stephen’s book at http://factuallypod.com/books Learn more about your ad choices. Visit megaphone.fm/adchoices See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.