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alien life

Why sending messages to extraterrestrials is controversial

Space

Why sending messages to extraterrestrials is controversial

If there are intelligent aliens out there, should we try to get in touch with them? And who should speak for Earth, asks professor of astronomy Chris Impey

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Life

The hunt for the South Island kōkako, New Zealand’s long-lost bird

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Unicellular green algae with large cells.; Shutterstock ID 1042159933; purchase_order: -; job: -; client: -; other: -

Life

Why the origins of life remain a mystery – and how we will crack it

Features

Long spined sea urchins underwater on seabed of the Caribbean sea

Life

Surprising culprit found that killed 95% of a sea urchin population

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Giant kelp (Macrocystis pyrifera) grows in a thick, underwater forest near the Channel Islands in California. This area is part of a National Park and is teeming with thousands of marine species.

Life

Kelp forests capture nearly 5 million tonnes of CO2 annually

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Space

What are the prospects for life on the icy moons Europa and Enceladus?

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Mysterious deep-sea holes may be burrows of tiny shrimp-like creatures

Life

Mysterious deep-sea holes may be burrows of tiny shrimp-like creatures

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The slime mould Dictyostelium discoideum is used to study the origins of multicellularity

Life

How did multicellular life evolve? Algae and yeast give some hints

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Earth

Oxygen on early Earth may have come from quartz crushed by earthquakes

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Stephen Hawking with Thomas Hertog, in Hawking's office

Physics

Stephen Hawking's final theorem turns time and causality inside out

In his final years, Stephen Hawking tackled the question of why the universe appears fine-tuned for life. His collaborator Thomas Hertog explains the radical solution they came up with

Features

Humans

See the top shots in the Woman Science Photographer of the Year award

Regulars

Humans

Next Exit film review: New tale of the afterlife takes a wrong turn

Culture

Life

Prawn larvae conceal their eyes with reflectors to hide from predators

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Space

Space rock or flashy alien technology? We're going to find out

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