News
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Cloning is most efficient using non–stem cells
Fully matured cells can be used to clone animals.
- Animals
Tropical diversity came with time
Species in richly diverse tropics don't evolve faster than do species in temperate zones.
- Health & Medicine
Antiviral drug may limit herpes spread
In people with genital herpes, the drug famciclovir sharply reduces virus shedding from the genitalia.
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Prepared brains achieve insight
Sudden verbal insights arise from distinct brain operations that focus attention and facilitate access to word knowledge.
- Health & Medicine
Do acid blockers let microbes reach the colon?
Suppressing stomach acid while taking antibiotics may allow drug-resistant bacteria to colonize the intestines.
- Astronomy
Record-breaking galaxy
Looking ever deeper into space and farther back in time, astronomers have found a galaxy more distant than any other known in the universe.
- Planetary Science
Web Special: Clay magic on Mars
NASA's Mars Reconnaissance Orbiter has just completed a week of picture taking from as low as 300 kilometers above the surface of the Red Planet.
- Chemistry
Pretty in Pictures: Details of molecular machinery gain Nobel
This year's Nobel Prize in Chemistry went to a researcher who determined the structure, in atomic detail, of RNA polymerase taken from yeast cells.
- Earth
Nearly Naked: Large swath of Pacific lacks seafloor sediment
Little or no sediment has accumulated on a broad patch of ocean bottom in the remote South Pacific, the result of a combination of factors that probably can't be found anywhere else on Earth.
- Animals
Courting Costs: Male prairie dogs seem too busy mating to dodge predators
Male prairie dogs get so distracted during mating season that predators find them easy pickings.
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Well Traveled: Gene split arose early in domesticated goats
Two separate goat lineages inhabited the same site in southwestern Europe about 7,000 years ago, indicating that the extensive transport and mixing of domesticated goats began shortly after the origins of farming in the Near East.
- Math
Messiness Rules: In high dimensions, disorder packs tightest
In high dimensions, disorderly arrangements of spheres pack together more densely than orderly arrangements do.
