An analysis of supernovae argues that the universe’s expansion is not speeding up, so there is no need for dark energy to ...

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Orcas have been seen smashing into sharp-tail sunfish so hard that the fish bursts into thousands of fragments, perhaps as a ...

That is the philosophy of the open-source software movement, which sees volunteers coming together to code, patch and improve ...

Feedback is surprised to learn that geology is a particularly deadly speciality to pick if you're a fictional character, with ...

Sublimation, in which a person can split into two when crossing an international border, is tip-top stuff. Don't miss it, ...

A handheld breathalyser picks up on a molecule called acetone, revealing that your body is using fat for energy ...

Readers take issue with a former answer to this question, arguing for the different behaviour of wasps and flies – and for a ...

Air usually seems “stale” if it contains elevated levels of carbon dioxide (from human respiration) and odour, neither of ...

The long fangs of Smilodon were thought to be rather delicate, but a study of large herbivore remains from Argentina shows ...

This beautiful artwork of climate activist Gladys Bartlett is a reminder of the fate of Kale Island, her former home. It is ...

Tom Gauld's weekly cartoon ...