7,845 results
7,845 results for: Geology
- Planetary Science
Life-friendly environment confirmed on Mars
Drill sample from bedrock reveals chemistry that could have supported microbial life.
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- Earth
Grand Canyon could be much older than thought
Disputed dating of rock erosion pegs the ancient chasm as 70 million years old.
- Paleontology
The Last Lost World
Ice Ages, Human Origins, and the Invention of the Pleistocene, by Lydia V. Pyne and Stephen J. Pyne.
- Earth
Intraplate quakes signal tectonic breakup
The unusual April temblors are the latest in a massive energy release that is cleaving the Indo-Australian crustal plate in two.
- Planetary Science
Young scientist crosses fingers for Mars rover
Ryan Anderson’s graduate work helped researchers select Curiosity’s landing site in Gale Crater.
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Letters
Fractious debateRachel Ehrenberg’s feature story on hydraulic fracturing “The Facts Behind the Frack,“ (SN: 9/8/12, p. 20) spurred a big response from readers. We received letters voicing strong opinions on both sides of the fracking debate. The article was intended as an overview of what science has to say about the risks of fracking and, due […]
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- Space
First rock from the sun turns out to have ice
Frozen material at the planet’s poles likely came from comet or asteroid impacts.
- Earth
The facts behind the frack
The gas, primarily methane, is cheap and relatively clean. Because America is brimful of the stuff, harvesting the fuel via fracking could provide the country jobs and reduce its dependence on foreign sources of energy.
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BOOK REVIEW: Under the Surface: Fracking, Fortunes and the Fate of the Marcellus Shale by Tom Wilber
Review by Rachel Ehrenberg.
- Earth
Mexican silver made it into English coins
Chemical tests of currency help reveal where New World riches flowed.
