7,845 results
7,845 results for: Geology
- Climate
Carbon dioxide not to blame in ice age mystery
Scientists look at seafloor sediments to determine that a long-term decline in carbon dioxide is not the reason for less frequent ice ages.
- Climate
Giant snakes warming to U.S. climes
Some were pets whose bodies and appetites apparently got too big for their owners to support. Most are probably descendants of released pets. Today, thousands of really big non-native snakes — we’re talking boa constrictors, anacondas and pythons — slither wild in southern Florida. And there’s nothing holding them in the Sunshine State. Which is why a report that was released today contends they pose moderate to high ecological threats to states on three U.S. coasts. Indeed, the homelands of these snakes share climatic features with large portions of the United States — territory currently inhabited by some 120 million Americans. Based on comparisons of the temperatures, rainfall and land cover found in the snakes’ native range, it’s possible that these slithering behemoths could stake claims to territory as far north as coastal Delaware and Oregon.
- Tech
Watching Earth for 25 years
The Landsat 5 satellite launched in 1984 with a mission to orbit and image Earth's surface for three years. Still in orbit, the satellite has continuously documented changes in landscape.
- Earth
Naked planet
Scientists officially launch OneGeology, a project that will produce a single digital map of the planet’s geological formations.
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Pearls Unstrung
For a while, the Great Lakes weren’t connected by rivers and Niagara Falls was just a trickle.
- Life
Early land arthropods sported shells
Ancient ocean-dwelling arthropods may have worn shells to enable their transition to land.
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The iron record of Earth’s oxygen
Scientists are decoding the geological secrets of banded iron formations.
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Science Future for September 27, 2008
October 3 Grid Fest at CERN in Geneva marks LHC’s computing grid going live. Visit lcg.web.cern.ch/LCG/lhcgridfest October 12–18 Earth Science Week 2008, sponsored by the American Geological Institute, celebrates “No Child Left Inside.” Visit www.earthsciweek.org October 20–21 Orionids meteor shower expected to peak. Visit www.imo.net/calendar/2008
- Earth
Nickel down, oxygen up
Researchers point to the early ocean's concentration of nickel as the possible start for events that allowed Earth's atmosphere to accumulate oxygen.
- Earth
Earthquake history recorded in stalagmites
Where stalagmites start and stop in caves could offer more precise clues about when major earthquakes have hit (and could again hit) the Midwest.
- Earth
Continental clash cooled the climate
The collision between India and Asia set off events that caused long-term cooling in Earth’s climate, new research suggests.
- Paleontology
Dino feathers may have had earlier origin than thought
Researchers report that newly described dinosaur fossils suggest an ancient origin of feathers.
