A monkey descending a tree trunk often keeps its head up, moving almost like a cautious climber backing down a ladder. Squirrels and many other mammals, by contrast, tend to go headfirst.

Sixty-six million years ago, a massive asteroid smashed into Earth. Life has undergone at least five mass extinctions in the ...

Purchased with funds from the S. Dillon Ripley Endowment. Cover -- Cortical Evolution in Primates -- Copyright -- Dedication -- Contents -- List of figures and tables ...

Humans perceive emotional expressions displayed by non-human primates and spontaneously mimic these expressions, according to a study published March 11, 2026, in the open-access journal PLOS One by ...

Humans not only recognize emotions on the faces of monkeys and apes but also unconsciously mimic those expressions.