The mighty and noble steeds of medieval warfare might not have been so mighty after all – they were actually quite small.

In space, nobody can you scream about how unwell you are – and ambulances might struggle to reach you. So, what do astronauts ...

Lurking in prehistoric seas, a colossal, intelligent hunter the length of four cars was crushing bones and seizing prey ...

Wait... have I read this before? Is déjà vu unhealthy, or just a normal brain function? We're sure we already told ...

Which animal kills the most humans in a year? From dogs to mosquitos, here are the top 10 most deadly creatures on Earth.

The similarities may be uncanny, but identical twins aren't exact copies of one another, despite their matching DNA.

Meet the Pompeii worm, an ocean worm that can withstand the heat of hydrothermal vents and deep sea pressure.

Mirror life could end all life on Earth. That sounds dramatic, but senior biologists have raised the alarm about experiments ...

Gibraltar macaques have been observed eating soil, perhaps to cope with the negative effects of human junk food, according to ...

It's rare amongst mammals, but for humans and a few whales, losing the ability to reproduce with age might help their children's offspring survive. Humans, killer whales and pilot whales are the only ...

Studies show we are far more likely to giggle when others are chuckling around us than let out a guffaw by ourselves.

Actions which hurt your chance of success can come from low self-esteem – here are a few tips to break the habit ...