Stem cells offer an extraordinary toolkit for science and medicine. Researchers are getting better at turning these pluripotent cells into specialized tissues, including insulin-producing beta cells.

Lena Dunham’s searingly funny, shockingly honest memoir reveals how Hollywood culture allows pretty much anything, except human frailty.

The handshake is one of the most ancient and familiar gestures. It has carried many meanings – signalling trust and alliance, but also grief and deception.

A host of unique crocodylian species ruled the roost in Australia and surrounds for millions of years – until humans came along.