Two religions—walking through the metropolis of Adana, #Turkey. A photo posted by Out of Eden (@outofedenwalk) on Sep 18, 2014 at 11:37am PDT Refugees from the Syrian conflict in Turkey.

Trace fossils, the most ... Because the human footprints step into mammoth tracks on their journey north, and then a mammoth steps onto the human tracks after that human returns walking south, ...

Becoming Human: The Evolution of Walking Upright Walking on two legs distinguished the first hominids from other apes, but scientists still aren’t sure why our ancestors became bipedal.

Human running is less efficient than the running of a typical mammal with the same body mass, a new study finds. tcd123usa/Flickr Why hominids evolved upright walking is one of the biggest ...

[Related: Foraging in trees might have pushed human ancestors to walk on two feet.] The team found that the recoil of a flexible arch repositions in the ankle upright for more efficient walking ...

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