Space messes with astronauts' brains – and that might have implications for missions beyond the Moon.
In the ocean's twilight zone, where the reach of the Sun fades to nothing, an epic migration begins every time night falls. It could also have an outsized effect on our climate.
The "behavioural immune system" can drive harsher moral judgement and may even contribute to xenophobia.
Erectile dysfunction can be an early warning of heart attack, stroke, diabetes and dementia.
Scientists are studying the few extraordinary individuals whose bodies seem able to naturally defend themselves from HIV in the hope of finding new cures.
Cats and dogs can be allergic to pollen and even humans, but getting a diagnosis is a lengthy process.
All-female species have been long thought of as evolutionary dead ends – but one fish has defied the odds to live without males, revealing new clues to how genomes stay healthy.
Research is revealing surprising new insights about how much our genes do – and don't – make us who we are.
From the most effective medications to the most common triggers to avoid, we examine science-backed advice that should reduce your seasonal suffering.
