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Life

The first teeth were sensory organs on the skin of ancient fish

Teeth are good for chewing and biting, but they are also sensitive – and that may have been their original function hundreds of millions of years ago

Planet in a double star system

Space

Weird planet is orbiting backwards between two stars

Health

West Nile virus detected in mosquitoes in the UK for the first time

An artist impression of Earth quasi-satellite Kamo`oalewa near the Earth-Moon system. (Image credit: Addy Graham/University of Arizona)

Space

China is readying a mission to two rocky bodies in our solar system

Environment

Tropical forest loss doubled in 2024 as wildfires rocketed

Alicella gigantea, the world's largest amphipod

Life

Supergiant crustaceans could live across half the deep-sea floor

Technology

How the US military wants to use the world’s largest aircraft

Space

Earliest galaxy ever seen offers glimpse of the nascent universe

Health

Vaccine may treat cocaine addiction by blocking drug’s entry to brain

Humans

Ancient Maltese temples may have been schools for celestial navigation

The alignment of some megalithic temples in Malta suggests they may have been used to teach sailors how to navigate by the stars

Space

Astronomers double down on claim of strongest evidence for alien life

Environment

Sea level will rise fast even if we limit global warming to 1.5°C

Technology

AI doesn’t know ‘no’ – and that’s a huge problem for medical bots

Technology

Attempt to reach expert consensus on teens and phones ends in argument