Why Are Chimps Still Chimps?

“Six million years ago, what set our ancestors on the path from ape to human?”

(2011) Michael Dougherty   AMERICAN BIOLOGY TEACHER

Woody cover and hominin environments in the past 6 million years

(2011) Thure E. Cerling et al.   NATURE

Comparative expression analysis of the phosphocreatine circuit in extant primates: Implications for human brain evolution

(2010) Adam D. Pfefferle et al.   JOURNAL OF HUMAN EVOLUTION

Genomic signatures of diet-related shifts during human origins

(2010) C. C. Babbitt et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Natural selection in a contemporary human population

(2009) S. G. Byars et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Relaxed selection in the wild

(2009) David C. Lahti et al.   TRENDS IN ECOLOGY & EVOLUTION