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Contents
- Mystery Meteorite: The case for (and against) a rock from Mercury
- Hard Times for Theorists in a Post-Higgs World: The Large Hadron Collider’s big success leaves no clear avenue for new physics
- In the Eye of the Tiger: Global spread of Asian tiger mosquito could fuel outbreaks of tropical disease in temperate regions
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Read articles, including Science News stories written for ages 9-14, on the
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Contents
- Infection time: Disease is more severe when it hits in the morning, at least in mice
- Explainer: Our bodies’ internal clocks: Biological clocks determine hunger, sleepiness and other daily rhythms
- Flu in the air: Germs tiny enough to pass through surgical masks may cause half of all cases
Planetary Science
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Scientists struggle to understand how early Earth stayed warm enough for liquid water.
Nicolle Rager Fuller
- A gravity survey by twin orbiters reveals how much the lunar surface was pummeled by meteorite impacts early in its history.
- Deposits didn’t need flowing water to form, new research suggests.
- After a safe landing, NASA’s Curiosity begins transmitting images back to Earth.
- Lowered by sky crane onto the surface, NASA rover prepares to look for signs that life could have evolved on the Red Planet.
- New analyses of Cassini images reveal ice on the pockmarked Saturnian satellite Hyperion.
- Geologic activity and weather on Saturnian moons, and studies in Greenland to learn about Mars.
- Astronomers have found elements in the dead stars’ atmospheres that suggest rocky planetary bodies once orbited the stars.
- A huge shattered moon could have sprayed ice particles around the newborn planet.
- Odd spots on the lunar farside could be ancient material that originated deep inside the moon.
- Lava flow suggests recent volcanism on Earth’s nearest planetary neighbor.
- Primordial molecules could have replicated themselves in a slushy place, new experiments suggest.
- A decade of droughts has stifled the increasing growth of terrestrial vegetation.
- Whirlwinds leave dark paths behind by sucking sand grains clean.
- Researchers discover a fresh meteorite impact crater using Google Earth.
- Instruments on a massive berg help pinpoint a previously unreported undersea ridge.
- Under certain conditions, aircraft can trigger precipitation as they pass through moisture-laden clouds.
- Michigan zircons uncover the path of an ancient river system across North America.
- Phobos may be a mass of rocky rubble, not a captured asteroid.
- Dips in Earth's gravitational field are tied to 'slab graveyards'
- Lower reflectivity kept Earth from freezing under a fainter young sun.
- An uptick in ammonium may be evidence of a 50-billion-ton strike at the end of the ice age.
- The GRACE satellites have tracked water movement from the Central Valley since 2003.
- Newly analyzed observations suggest that particles are tiny spherules of frozen nitrogen and carbon monoxide.
- The feature may be a ‘skylight’ in an underground lava tube.
- The first spacecraft to visit Mercury in 33 years imaged 25 percent of the crater-pocked surface that had never before been seen close-up.
- Scientists have traced the reappearance of cotton pests in west-central Texas to a tropical storm.
- Researchers have found the first compelling evidence for a rocky planet beyond the solar system.
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Not to miss
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Coverage of the 2013 American Association for the Advancement of Science meeting
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The Year in Science 2012
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Three-part series on the scientific struggle to explain the conscious self
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Tables of contents, columns and FAQs on SN Prime for iPad
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By Leila Schneps and Coralie Colmez
Review by Janet Raloff
