7,845 results
7,845 results for: Geology
- Life
Bacteria use poison to make food
Bacteria from Mono Lake conduct photosynthesis with arsenic, a form of the process that may be a relic of life on Earth before the advent of an oxygen atmosphere.
- Space
Sharpshooting Enceladus
Swooping within 49 kilometers of Saturn’s tiny, geologically active moon Enceladus, the Cassini spacecraft has pinpointed the locations of the icy geysers that erupt from the southern hemisphere of this wrinkled moon’s surface.
- Earth
Firm evidence that Earth’s core is solid
Faint yet distinct ground motions recorded by a large network of seismic instruments in Japan in early 2006 are the strongest, most direct evidence that Earth’s inner core is solid.
- Earth
Climate clues in ice
A kilometers-long ice core from Antarctica has been recording climate information for the past 800,000 years and has revealed a three millennia–long period when carbon dioxide levels in the air were lower than any previously measured.
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- Humans
Machu Picchu’s far-flung residents
A new chemical analysis of skeletons at the Inca site of Machu Picchu strengthens the idea that the royal estate was maintained by retainers who had been uprooted from homes throughout the empire.
- Earth
Britain’s biggest meteorite strike
An unusual layer of rock found along Britain's northwestern coast formed from the debris thrown out of a crater when a meteorite struck nearby more than 1 billion years ago.
- Oceans
Death by magma
Widespread extinctions in the world’s oceans millions of years ago may have been triggered by massive underwater volcanic eruptions that created much of the Caribbean seafloor.
- Life
Humans aided, constrained by fossil fuels
Maintaining long-term population will require alternate energy sources.
- Life
Elephant kin liked the water
Moeritherium, ancient relatives of modern elephants, may have spent much of their time in lakes, rivers or swamps.
- Earth
Virtual seismometer
A new supercomputer simulation of the large quake that struck central China earlier this month could help researchers estimate the size of the ground motions experienced in areas that didn’t have seismic instruments.
- Earth
First wave
The presidents of two island nations draft escape plans, anticipating sea level rise.
