One in 60 adults Fiji lives with HIV but a recent emergency declaration may help address key issues such as syringe sharing

A decades-old rule about human friendship turns out to be built on such shaky math that it could just as easily be 2 or 520.

The descent of stable societies into ones of endemic violence rarely produces anything but new forms of tyranny and terror.

Researcher says sightings of the endangered moth have increased over the last two years but ‘this year has blown them out of the water’

John Green, the #1 bestselling author of The Anthropocene Reviewed and a passionate advocate for global healthcare reform, tells a deeply human story illuminating the fight against the world’s deadliest disease.

Cosmic radiation comes from space. Only a small amount reaches the Earth's surface, but exposure is greater for people flying at high altitudes.

AI makes finding software exploits casually easy. Security through nobody-bothering has been holding up far more of this industry than we'd like to admit.

Changes in guidance and science seem to have little impact on millions of devastated lives. It’s a social crisis playing out behind closed doors, says Guardian columnist George Monbiot

I joined the Green Party of England and Wales in 2014.

Social media has been a boon to autocratic regimes and their allied movements in democracies.

A Little Tooth - Your baby grows a tooth, then two,

What can a rare disorder tell us about human behavior?