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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
Web edition: August 26, 2011
Print edition: September 10, 2011; Vol.180 #6 (p. 4)
NEW PARTICLE DISCOVERED — The discovery of a new elementary particle, omega meson, made at the University of California’s Lawrence Radiation Laboratory, and the finding of unidentified additional “particle systems” in the subatomic realm are believed to make it possible to push on in the next decade or two to a better explanation of how matter is put together. More than 30 so-called elementary particles are known. The new elementary particle discovery gives important insight into the structure and behavior of the atomic nucleus. It plays an important role in the structure of protons and neutrons, the basic building blocks of atomic nuclei. The mass of the omega is 1540 electron masses. Like the neutron, the omega has no electrical charge.
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