Knowing when dinos evolved their stable internal thermometer could help scientists answer questions about how they lived

Dinosaurs were initially cold-blooded, but global warming 180 million years ago may have triggered the evolution of warm-blooded species, a new study found.

Now, a new study estimates that the first warm-blooded dinosaurs may have roamed the Earth about 180 million years ago, about halfway through the creatures' time on the planet. Warm-blooded creatures — including birds,

Based on an analysis of ancient tree rings that date all the way back to the year 1, last summer was the hottest in the past 2,000 years.

A closer look at tree rings is adding to the growing list of evidence that shows unprecedented temperatures measured on Earth over the past year.

That data already had confirmed the summer of 2023 as the hottest ever recorded. However, the Cambridge crew turned to tree ring data to reach back 2,000 years and last summer was still the hottest over that entire period of time.