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Devon island

Space

Ancient valleys on Mars may have been carved by glaciers

Some areas on Mars are covered in huge valleys that many think were carved by rivers in the planet's warmer past, but they may have actually been formed by glaciers, pointing to a chilly early Mars

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stonehenge

Humans

We’ve finally figured out where Stonehenge’s giant boulders came from

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Fossils

Definition

Fossils

Seismic waves reveal giant structures deep beneath Earth’s surface

Earth

Seismic waves reveal giant structures deep beneath Earth’s surface

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All five of Earth's largest mass extinctions linked to global warming

Environment

All five of Earth's largest mass extinctions linked to global warming

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Mysterious alignment: How do ancient monoliths still line up with the sun?

Last Word

Mysterious alignment: How do ancient monoliths still line up with the sun?

Regulars

Plate tectonics may have started on Earth 3.2 billion years ago

Earth

Plate tectonics may have started on Earth 3.2 billion years ago

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A giant raft of rock may once have floated across Mars’s ancient ocean

Space

A giant raft of rock may once have floated across Mars’s ancient ocean

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Putorana plateau and mountains in Siberia, Russie

Earth

Rock peeling off continents may have triggered biggest mass extinction

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surface of Venus

Space

Strange lines on Venus may be folded stacks of lava eroded by wind

Venus’s surface is covered in strange wiggling lines that may form when colossal stacks of lava are carved by gentle winds over hundreds of millions of years

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Space

China’s rover has discovered what lies beneath the moon’s far side

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Life

See the exquisite inner world of the gemstone crazy lace agate

Regulars

Space

Huge Earth-like worlds could host reservoirs of water deep underground

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The adventures of a geologist: From shipwrecks to mapping the Arctic

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