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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
How Old is the Universe?
Web edition: April 8, 2011
Print edition: April 23, 2011; Vol.179 #9 (p. 34)
An astronomer outlines the research showing that the universe is 13.7 billion years old.
Princeton Univ. Press, 2011, 370 p., $29.95.
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