Earth
- Earth
Natural concrete keeps lid on Italian volcano
Naturally occurring, concretelike rock allows the ground around Italy’s Campi Flegrei caldera to bulge without bursting.
- Climate
Greenland’s out-of-sync climate explained
Small variations in the sun’s activity cause big changes in Greenland’s temperatures decades later by altering ocean currents, new research suggests.
- Climate
Pink salmon threatened by freshwater acidification
Ocean acidification gets more attention, but freshwater systems are also acidifying. That’s a problem for young salmon, a new study finds.
- Earth
Leap second helps us with the reality of time
A leap second will be inserted at the end of the day on June 30.
- Life
Alison Jolly’s last book chronicles efforts to save lemurs
In ‘Thank You, Madagascar,’ primatologist Alison Jolly, who spent decades studying lemurs, provides an insider’s account of the struggles that conservationists face.
- Astronomy
Super-Earths are not a good place for plate tectonics
The intense pressures inside super-Earths make plate tectonics less likely, new research suggests.
- Environment
Oil-munching microbes cleaning up Gulf marshes faster than expected
Microbes in some of Louisiana’s marshes are breaking down oil from the Deepwater Horizon spill faster than expected.
- Earth
Fast-spreading crack threatens giant Antarctic ice shelf
A fast-spreading crack threatens Larsen C, one of Antarctica’s biggest ice shelves, satellite data suggest.
- Agriculture
Many of Earth’s groundwater basins run deficits
Twenty-one of Earth’s 37 largest groundwater basins are rapidly depleting, satellite data show.
- Earth
Dinosaurs may not have seen the Grand Canyon after all
New geologic comparisons peg the Grand Canyon’s inception well after dinosaurs went extinct.
- Earth
Most of Earth’s impact craters await discovery
Hundreds of undiscovered impact craters probably dot Earth’s surface, new research estimates.
- Planetary Science
Water’s origin story, science and sci-fi and more reader feedback
Readers discuss how Earth got its water, chat about a hot spot's violent past and more.
