Search Results for: Geology
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Archaeology
Laser scanners map rock art
Researchers have developed a way to use laser-based surveying equipment to quickly and easily create detailed images of ancient rock art.
By Sid Perkins -
Humans
Young Talent on Display: Tomorrow’s scientists and engineers win recognition, rewards
The three top winners of the 2004 Intel International Science and Engineering Fair hail from high schools on different continents.
By Ben Harder -
Earth
Killer Waves
Scientists are using sophisticated computer models, field studies of coastal geology, and data from tidal gauges to assess the tsunami risk for coastal residents.
By Sid Perkins -
Planetary Science
Martian sand ripples are taller than Earth’s
New data gathered by a Mars-orbiting probe suggest that large ripples found in sandy areas of the Red Planet are more than twice as tall as their terrestrial counterparts.
By Sid Perkins -
Planetary Science
Signs of Water Flow: Oceans of data point to ancient Martian sea
A robotic rover on Mars has found strong evidence that some rocks near the Martian equator were laid down by a shallow, ancient ocean, indicating one of the most likely places to look for remains of life on the Red Planet.
By Ron Cowen -
Planetary Science
Bone-dry Mars?
The presence of large amounts of olivine, a mineral that undergoes rapid chemical transformation when exposed to liquid water, argues against ancient oceans or lakes on Mars.
By Ron Cowen -
19347
I read and reread this article, hoping to find an explanation of where all those sediments have gone. From appearances, they surely all haven’t been deposited in the Gulf of California. Where else? Does anyone have any satisfying theories? Allen Glenn Abilene, Texas Sediments from the erosion of the Grand Canyon have ended up in […]
By Science News -
Earth
National Atlas
Provided by the U.S. Department of the Interior, this Web site features an interactive map generator that allows users to view and download custom maps of the United States. The maps access a database that includes information about the nation’s agriculture, biological resources, climate, environment, geology, history, transportation, watersheds, population distribution, county boundaries, and other […]
By Science News -
Earth
The Making of a Grand Canyon
Carving this beloved hole in the ground may not have been such a long-term project.
By Sid Perkins -
Plants
Smokey the Gardener
Wildfire smoke by itself, without help from heat, can trigger germination in certain seeds, but just what the vital compound in that smoke might be has kept biologists busy for years.
By Susan Milius -
Earth
Meteorite Crater
The Barringer Crater in Arizona is one of the more famous geological sites on Earth. This Web site recounts the history and science of the crater’s formation 50,000 years ago and provides information about its discovery, its purchase by D.M. Barringer, and its current status. Go to: http://www.barringercrater.com/
By Science News -
Earth
Lake Retreat: African river valley once hosted big lake
The valley of the White Nile in Africa may long ago have held a shallow lake that sprawled 70 kilometers across and stretched more than 500 km along the river.
By Sid Perkins