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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
DOMAINS OF LIFE
View Larger Version | Members of the three domains of life are pictured. Archaea (represented by halophiles) and bacteria (represented by E. coli) are often clumped together under the term prokaryote. Eukaryotes (represented by a single-celled amoeba) are bigger, encase DNA in a membrane and contain organelles that arose from bacteria.
Credit: Clockwise from top left: Eye of Science/Photo Researchers; Kent Wood/Photo Researchers; Scott Camazine/Photo Researchers
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