CBS News: Gorilla evolution shaped by climate change, humans

Nano patents and innovations blog: Climate Change And Evolution Of Cross River Gorillas

NY Times: Hanging Out, Grooming, Fighting Foes: Friendship Among Macaques

Science: Are Some Chimp 'Cultural' Behaviors Actually in the Genes?

New Scientist - The genetical evolution of chimp culture

Discover Magazine - The genetic side to chimpanzee culture

Welt Online - Schimpansen gucken doch nicht ab (in German)

New Times.co.rw: Rwanda: Census of Mountain Gorillas Begins Next Month

New Scientist: Mountain gorillas in dire straits, DNA reveals

BBC News article: Gorilla study gives social clues

EVIDENCE: How we know what we know
In the section 'Observing Behavior' Linda Vigilant, Christophe Boesch & Svante Pääbo (amongst others) discuss the links between our and the great apes' evolutionary pasts. As Linda talks about male relationhsips in chimpanzees, students from the Vigilant lab demonstrate how DNA is collected and extracted from feces.