7,733 results
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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.
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- Planetary Science
Curiosity lands safely on Mars
Lowered by sky crane onto the surface, NASA rover prepares to look for signs that life could have evolved on the Red Planet.
- Life
Immune disease an added blow to fungus-ridden bat populations
Rare immune complication previously seen only in people devastates animals that had appeared to evade white nose syndrome.
- Life
Early life forms may have been terrestrial
A controversial theory suggests that at least some of the earliest widespread complex life forms lived on land.
- Science & Society
Descending to the Challenger Deep
Director James Cameron reveals the science of his deep-sea exploration.
- Earth
Sea level rise overflowing estimates
Future sea level rise might exceed estimates due to environmental feedbacks.
