7,733 results
- Earth
Long Ride West: Many western sediments came from Appalachians
Much of the material in several thick layers of sandstone in the western United States originated in the Appalachians.
- Earth
Undersea Mountain Descent
Join an international expedition in exploring an underwater mountain in the middle of the Atlantic Ocean. Twice-weekly dispatches highlight the scientific team’s findings for the duration of the expedition from Nov. 14 to Dec. 14. Hosted by the Scripps Institution of Oceanography, the expedition’s Web site also includes colorful diagrams illustrating various geological concepts and […]
- Earth
Study gives new answer for muddy mystery
Geologists provide evidence that quartz silt in ancient seabeds doesn't come from eroded land rocks, but rather from the dissolved skeletons of tiny primitive creatures, possibly altering the fossil record and changing models of prehistoric climate and ocean geography.
- Humans
Science News of the Year 2004
A review of important scientific achievements reported in Science News during the year 2004.
- Earth
Blasts from the Past: Orbiting radar spots old nuclear-test sites
A technique that analyzes satellite images to detect subtle ground motions often can perceive subsidence over underground nuclear-test sites, sometimes even if those tests occurred decades ago.
-
Amphibian Atlas
Looking for a Montana tailed frog outside Montana or wondering in which state you might find a desert slender salamander? The U.S. Geological Survey has a Web site that identifies the places where different types of amphibians dwell across the United States. Click on any one of the 280 or so species of amphibians currently […]
- 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.
