250 million is the new 40: mammals may already be halfway there on Earth, study finds
A new study in the journal Natural geosciences predicts that in 250 million years, a supercontinent formed around the equator will be too hot for mammals to survive. Jean-Philippe Ksiazek/AFP via Getty Images hide caption toggle caption Jean-Philippe Ksiazek/AFP via Getty Images A new study in the journal Natural geosciences predicts that in 250 million…