Scientists are finally decoding the orgasm face. Explore how human evolution, primate behavior, and mate selection shape our expressions of climax.

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

Facial expressions arise from brain networks that encode slow, context-rich meaning and fast muscle control on different time scales, keeping smiles and threats socially precise.

Photo-Illustration by Chloe Dowling for TIME (Source Images: Klaus Vedfelt—Getty Images, Tim Robberts—Getty Images, Kelvin Murray—Getty Images, Robert Recker—Getty Images, Howard Kingsnorth—Getty ...

Happy, sad, angry, scared: Some of us are good at hiding these everyday emotions, while others are unable to disguise them. Whether subtle or intense, facial expressions are the key to how we identify ...

Lay presentations of research on emotions often make two claims. First, they assert that all humans develop the same set of core emotions. This claim is called the “basic emotion approach” (Ekman, ...

Connor Tom Keating receives funding from the Medical Research Council (MRC). Jennifer Cook has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under ...