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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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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
ROUGH CHALLENGE
550-million-year-old fossils of Dickinsonia and Parvancorina from South Australia lie in rock textured like old elephant skin. That texture might indicate fossilized soil from land, suggests a new study that challenges the prevailing view that the Ediacaran fossils were all sea creatures.
Credit: G. Retallack
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