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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
Life or death
View larger image | Differences in enzyme levels among individual cells were tracked using a red fluorescent marker (right). Human tumor cells (at left, one line per cell) that withstood a dose of an anticancer drug made more of a certain enzyme, while enzyme levels dropped in cells eventually killed by treatment. Blue lines mark surviving cells.
Credit: Cohen et al./Science 2008
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By Leila Schneps and Coralie Colmez
Review by Janet Raloff
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