The footprints of extinct lineages are the closest we have to a fossil record of the African apes.
A 33,000-year-old case of an amputated leg prompts comparisons to earlier Neandertal instances of amputation.
I speak with Dr. Pruetz about her fieldwork with chimpanzees at Fongoli, Senegal.
New research suggests that herpes simplex virus 2 may have invaded ancient humans from chimpanzees sometime after 1.6 million years ago.
Reviewing a 2014 study by Kevin Langergraber and coworkers looking at the Y chromosome variation within chimpanzee groups.
The TRIM5α protein in humans doesn't resist HIV very well but may have once protected us from another ape virus.