T. rex teeth indicate it ran as warm as an elephant
Isotope ratios provide a hint that the giants were actively managing temperatures.
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Did poop enable the evolution of complex animals?
In a recent study, evolution gets even messier than usual.
Protein in Homo erectus teeth suggests Denisovans gave us some of their DNA
Distinct form of tooth protein in Homo erectus shows up in Denisovans—and us.