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Space

Little galaxy’s own stars cast 95 per cent of its oxygen away

Tiny Leo P has lost most of its oxygen. New observations suggest the culprits are the same stars that created the element

Earth

Ocean’s hidden green plankton revealed by fixing glitch in model

Space

The Martian: The science of surviving a space catastrophe

Earth

Hidden oasis of oxygen suggests life took first breath in lakes

What is artificial blood and why is the UK going to trial it?

Technology

One Per Cent

Earth

Secrets of the home: The chemical reactor you live in

Life

Volcanic iron delayed explosion of life on Earth

Earth

Pacific dead zone has been shrinking for a century

Earth

Swimming, climbing robots explore the hostile Arctic

The biggest experiment of its kind is camped out on the ocean north of Alaska. The machines could revolutionise our understanding of Arctic sea ice

Health

Tibetan altitude gene came from extinct human species

Environment

Pollution on other worlds may show advanced alien life

Near-death experiences are overwhelmingly peaceful

Space

Supernovae have the right stuff to mix cement in space