20The BBC reports
Because unlike virtually every other creature on Earth, we human beings do much more with energy than just power our own metabolism.
“Anything that allows an organism to get energy more efficiently is going to have huge effects on the evolutionary trajectory of that organism,” explains Prof Rachel Carmody of Harvard University in Cambridge, Massachusetts.
She believes the decisive development was cooking. Cooking transforms the energy available from food, she argues.
Read full story at The real reason humans are the dominant species – BBC News
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