Grassed Up
Humans started walking upright so they could see further. Forests turned into savannas 6,000,000 to 4,000,000 years ago. Dr. Feakin's opinion on people standing up straight had nothing to do with forests turning into savannas. She used carbon dating to see when and where plants developed and originated. Carbon dating is when there are different isotopes of carbon. Examples of these are carbon 12 and carbon 13. Using carbon dating, she found that Africa didn't have forests, so the theory that people standing upright because of savannas forming was false.
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