Stop Doomscrolling and Check Out the World’s Tiniest Critters

This story was originally published by the Guardian and is reproduced here as part of the Climate Desk collaboration. In the 19th century, the German zoologist Christian Bergmann pondered a simple question: Why are some animals so small? His answer, that a warm-blooded animal’s size increases as its habitat cools, remains a rule in biology to this day. “Bergmann pointed out […]