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Fri, 8 June 2012 - 2:37 p.m. MT Credit: ARA Staff - American Running Association Courtesy: Slate
http://www.slate.com/articles/sports/sports_nut/2012/06/long_distance_running_and_evolution_why_humans_can_outrun_horses_but_can_t_jump_higher_than_cats_.html?fb_ref=sm_fb_like_chunky&fb_source=home_multiline
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