7,845 results
7,845 results for: Geology
- Life
Just warm enough
Mammals may have evolved a characteristic body temperature to avoid fungal infections without burning too hot.
- Humans
Neandertals blasted out of existence, archaeologists propose
An eruption may have wiped out Neandertals in Europe and western Asia, clearing the region for Stone Age Homo sapiens.
- Chemistry
Bacterium grows with arsenic
A microbe appears to substitute a normally toxic element for a basic ingredient of life, raising intriguing questions about the limits of biochemistry.
- Planetary Science
Warmth in the dark age
Lower reflectivity kept Earth from freezing under a fainter young sun.
- Humans
2012 budget offers pain and gain for R&D
In a year of federal belt-tightening, the administration prioritizes basic research, education, clean energy and environmental science.
-
Building better can reduce catastrophic quake deaths
Thanks to the planet’s exploding population, more than a billion housing units will be built during the next half century. Many of those will be in urban areas that are vulnerable to catastrophic earthquakes such as the magnitude-7 quake that killed more than 200,000 people in Haiti in January. Roger Bilham, a seismologist at the […]
-
A violent tail
The MESSENGER spacecraft finds powerful magnetic storms on Mercury, along with signs of surprisingly recent volcanic activity.
- Earth
Feds up estimates of BP-spill rate
At a news briefing on June 10, Marcia McNutt, who chairs the National Incident Command’s brain trust of experts calculating the likely release rate of the ongoing Gulf of Mexico oil spill, pegged the best available estimates at between 20,000 and more than 40,000 barrels per day.
- Earth
Asteroid impact could have stirred the ocean
Model offers one explanation for sudden change in deep-ocean chemistry almost 2 billion years ago.
-
Book Review: Stories in Stone: Travels Through Urban Geology by David B. Williams
Review by Sid Perkins.
- Earth
Scientists scramble to analyze Haiti quake
Teams work to understand and model what could happen next.
- Planetary Science
Before the Mississippi, minerals show ancient rivers flowed west
Michigan zircons uncover the path of an ancient river system across North America.
