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- 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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- 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
Web edition: January 22, 2013
Scientists these days are worried about sea level. As Earth warms, the surface of the ocean is creeping upward. This creep is happening partly because saltwater expands a tiny bit as it warms. “Warmer water literally is taller,” explains Josh Willis. He’s a climate scientist at the NASA Jet Propulsion Laboratory in Pasadena, Calif.
He and others are learning how fast seas are rising, thanks in part to the Jason-2 satellite. Its eyes in the sky regularly measure the distance between its orbiting instruments and Earth’s surface. And the disturbing news: Seas are climbing quickly. In many areas, they threaten to seriously overrun coastal areas, especially during storms.
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