Giraffes roam in a wooded grassland savanna in Kenya's Nakuru National Park. The savanna grades into the woodland in the background. Credit: Naomi Levin, Johns Hopkins University
Where Did Humans Learn To Walk? -- Cosmos/AFP
PARIS: Grasslands dominated the cradle of humanity in east Africa longer and more broadly than thought, a new study has said, bolstering the idea that the rise of such landscapes shaped human evolution.
According to the so-called 'savannah hypothesis', the gradual transition from dense forests into grasslands helped drive the shift toward bipedalism, increased brain size and other distinctively human traits.
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