The footprints of over 20 different prehistoric people, pressed into volcanic ash thousands of years ago in Tanzania, show possible evidence for sexual division of labor in this ancient community.

A bereavement counsellor on grief, loss and longing.

Freedom of movement for survival.

Has the Sun entered a stage of old age?

Female piglets with more play fighting experience did better in adult contests – but for males the opposite was true.

Every time the virus copies itself it makes mistakes, creating a trail that researchers can use to build a family tree with information about where it's traveled, and when.

Research shows smartphone use disrupts an essential facet of human connection – eye contact.