Humans
We’ve finally figured out where Stonehenge’s giant boulders came from
News
geology
Environment
All five of Earth's largest mass extinctions linked to global warming
News
Last Word
Mysterious alignment: How do ancient monoliths still line up with the sun?
Regulars
Earth
Plate tectonics may have started on Earth 3.2 billion years ago
News
Space
A giant raft of rock may once have floated across Mars’s ancient ocean
News
Earth
Rock peeling off continents may have triggered biggest mass extinction
News
Space
Strange lines on Venus may be folded stacks of lava eroded by wind
News
Space
China’s rover has discovered what lies beneath the moon’s far side
News
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
News
The adventures of a geologist: From shipwrecks to mapping the Arctic
Regulars
Life
The bizarre plant-like animals that say life’s big bang never happened
Features
