Biology

We often think of allergies as the result of an unlucky hand dealt in childhood, or even before birth. But "any person, at any point in their life, can develop a new allergy".

Commensality – the act of sharing meals – can reduce your risk of depression and dementia.

Humans have become one of the world's greatest evolutionary forces. To survive our cities, animals from urban foxes to glass-climbing lizards are responding with extreme adaptation.

Jet lag is an often-unavoidable effect of long-haul travel, and it has several effects on the human body. Here's how to limit the worst effects.

When a single worm was discovered in the depths of our planet's crust, it began an extraordinarily lucky series of events that transformed our understanding of life at extreme depth.

Some Greenland sharks alive today may have been contemporaries of Shakespeare. With a scarred heart that beats for centuries, this deep-sea shark defies age-related decline.

Space messes with astronauts' brains – and that might have implications for missions beyond the Moon.