Simple_lan
Wed, Jul-18-07, 06:17
source: http://www.msnbc.msn.com/id/19794579/
Humans walking on two legs consume only a quarter of the
energy that chimpanzees use while "knuckle-walking" on all
fours, according to a new study.
The finding, detailed in the July 17 issue of the journal for
the Proceedings of the National Academy of Sciences, supports
the idea that early humans became bipedal as a way to reduce
energy costs associated with moving about.
Humans walking on two legs consume only a quarter of the
energy that chimpanzees use while "knuckle-walking" on all
fours, according to a new study.
The finding, detailed in the July 17 issue of the journal for
the Proceedings of the National Academy of Sciences, supports
the idea that early humans became bipedal as a way to reduce
energy costs associated with moving about.