7,845 results
7,845 results for: Geology
- Ecosystems
Light All Night
New digital images demonstrate that artificial light from urban areas penetrates deep into some of America's most remote wild places, where it may disrupt ecosystems that have evolved with a nightly quota of darkness.
- Earth
A hurricane can dump a lot of rain . . .
Hurricanes can drop enormous amounts of precipitation in a short amount of time, a phenomenon that residents of Puerto Rico experienced in spades when Hurricane Georges struck the island in 1998.
- Earth
Buried Treasures
Geologists have long understood the chemical processes that sculpt many cave formations, but they've only recently come up with a physical model that explains some of their shapes.
- Earth
What’s in the Dirt?
Curious about the abundance of various chemical elements in the area where you live? The U.S. Geological Survey offers a database of more than 60,000 chemical analyses of stream sediment and soil in different parts of the United States. Color-coded maps provide county-by-county data on the concentrations of such elements as mercury, arsenic, selenium, and […]
- Humans
Letters from the August 13, 2005, issue of Science News
Bay listen It was interesting to read of processing mundane noise to produce an ultrasound image of the geology of Los Angeles (“Seismic noise can yield maps of Earth’s crust,” SN: 6/11/05, p. 382). A big question in the state is the deep structure of San Francisco Bay. Clearly, the bay and the valleys extending […]
- Humans
From the February 2, 1935, issue
Crystal stalagmites from winter rain, evidence for early inhabitants in Texas, and a new transmission system for electric power.
- Animals
Out of the Jungle: New lemurs found in Madagascar’s forests
Two new species of lemur have been discovered in Madagascar, the only home of these tiny and endangered primates.
- Earth
Bacteria Ride the Tide: Moon’s phases predict water quality at beaches
At many ocean beaches, full and new moons coincide with the greatest concentrations of bacteria in the water.
- Humans
Evolution in Action
Debates on the conflict between evolution and intelligent design are taking place not only in the courts but also in state legislatures and even among members of local school boards, where topics include curricula, textbooks, and the definition of science itself.
- Earth
Volume of glaciers and ice caps is estimated
New topographic data have enabled scientists to estimate the volume of water trapped in the ice caps and glaciers outside of Antarctica and Greenland and to predict how high the sea level would rise if this ice melted.
- Earth
Mind the Gap: Inadequate monitoring at many U.S. volcanoes
A report just released by the U.S. Geological Survey ranks the threats posed by the nation's volcanoes.
- Ecosystems
Caviar Caveats
Caviar may become harder to find as a new trade ban goes into effect that's aimed at giving the most prized sturgeon a much-needed break from overfishing for their roe.
