Are humans unique or do we just do some things a little better than other species? In the first of our two-part series on the nature of humanity: how the influence of others has shaped our evolution.
Find out how baby talk gave root to human language and why social isolation can make us sick. Plus, the joke’s on us – new research says we’re not the only laughing species: meet your giggling gorilla cousins.
And, what a writer’s visit to a chimp retirement center revealed about human discomfort with our animal ancestry.