H. erectus cut, chewed way through evolution
Less energy needed to eat sliced raw meat led to smaller teeth, jaw
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/03/030916_bb_homoerectus.jpg?fit=860%2C460&ssl=1)
BITE CLUB Early members of the Homo genus evolved relatively small jaws and faces because they sliced raw meat with stone tools, making it easier to chew and digest, a new study concludes (Homo erectus, represented by a 1.8-million-year-old African skull, shown).
Chip Clark, Smithsonian Human Origins Program