Dr.GH

Hi there.

In regard to your first question, there were "cousins" of ours that did specialize in eating cellulose, Australopithecus boisei, and A. robustus. It didn’t work out and they became
extinct about a million years ago.

<a href="http://www.becominghuman.org/" target="_blank">http://www.becominghuman.org/</a>

<a href="http://www.mnh.si.edu/anthro/humanorigins/faq/Encarta/encarta.htm" target="_blank">http://www.mnh.si.edu/anthro/humanorigins/faq/Encarta/encarta.htm</a>

<a href="http://www.asu.edu/clas/iho/" target="_blank">http://www.asu.edu/clas/iho/</a>