7,845 results
7,845 results for: Geology
- Paleontology
Northern Extinction: Alaskan horses shrank, then disappeared
Horses that lived in Alaska shrank dramatically in body size before they went extinct at the end of the last ice age.
- Earth
Small quake shakes up hydrothermal vents
Long-term, post-earthquake fluctuations in the temperature and volume of water spewing from hydrothermal vents off the coast of Washington state suggest that the fluid flow feeding such vents may be much more complex than previously thought.
- Chemistry
The Nature of Things
An earth scientist's proposed alternative periodic table of elements is emblematic of the growing desire among scientists to recast this 130-year-old chart.
- Planetary Science
A New Flight Plan
President Bush recently unveiled an ambitious plan for a manned mission to Mars, using the moon as a testing area and stepping-stone, but for many planetary scientists the moon is a desirable destination in and of itself.
-
- Earth
Digging for Fire: Burning peat underlies Mali’s hot ground
Superheated ground and smoking potholes in northern Mali are evidence not of volcanic activity but of a layer of peat that is burning 2 feet below the desert surface.
- Earth
Limiting Dead Zones
To limit algal blooms and the development of fishless dead zones in coastal waters, farmers and other sources of nitrate are investigating novel strategies to control nitrate runoff.
- Earth
Frosty Florida: Spread of agriculture may promote freezes
Planting crops in south Florida may have increased the risk of the freezes farmers hoped to avoid.
- Paleontology
Teeth tell tale of warm-blooded dinosaurs
Evidence locked within the fossil teeth of some dinosaurs may help bolster the view that some of the animals were, at least to some degree, warm-blooded.
- Earth
Large lake floods scoured New Zealand
A volcanic region of New Zealand’s North Island experienced immense floods and severe erosion when lakes filling the craters of dormant volcanoes burst through the craters' rims and poured down the slopes.
- Earth
Attack of the Rock-Eating Microbes!
Geologists who examine mineral transformations increasingly see bacteria at work, leading the scientists to conclude that if microbes aren't driving the underlying chemical reactions, at least they're taking advantage of the energy that's released.
- Earth
Model offers grounds for midwestern quakes
A new computer model may help explain how earthquakes can happen at fault zones located far from the edges of a tectonic plate.
