7,844 results
7,844 results for: Geology
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- Earth
Oxygen wafted into Earth’s atmosphere earlier than thought
Date pushed back to 3 billion years ago, suggesting photosynthesis had evolved by then.
- Earth
Japan’s 2011 earthquake upped Tokyo’s risk
Chance more than doubled that capital city will soon experience big temblor, researchers calculate.
- Earth
Breakups maintain barchan dune fields, somehow
Two new theories try to explain how the crescent-shaped sand mountains persist.
- Earth
Life’s early traces
Tiny tufts, rolls and crinkles in 3.5-billion-year-old rocks add to a growing body of evidence suggesting that cellular life got a relatively quick start on Earth.
- Earth
Buried Saharan rivers might have been early expressways
Humans might have migrated across the arid region along three once-lush waterways.
- Planetary Science
Europa vents water, Hubble data suggest
Plumes from ice-covered oceans would increase likelihood of life-friendly conditions on one moon of Jupiter.
- Earth
Faults can reseal months after quakes
Measurements in southern China find quick healing of fractured rock.
- Animals
Oxygen boost aided carnivore evolution in Cambrian explosion
Atmospheric change and rise of predators caused burst in complexity of life.
- Earth
Huge quakes may foretell smaller, human-caused ones
Distant powerful temblors triggered ominous activity at wastewater injection sites.
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- Humans
Eruption early in human prehistory may have been more whimper than bang
If Hollywood’s right, the apocalypse will be brutal. Aliens, nuclear war, zombies, plague, enslavement by supersmart robots — none of them are good endings. Some archaeologists, however, believe an apocalypse has already come and gone. About 75,000 years ago, they say, a monster volcanic eruption nearly wiped out humankind, leaving behind only a few thousand people to […]
