News
- Health & Medicine
Vaccine targets ovarian-cancer cells
A vaccine for ovarian cancer enables some women who've undergone chemotherapy to stay in remission.
- Archaeology
Map yields new view of ancient city
A new map shows that Angkor, the world's largest preindustrial city, covered more than 1,000 square kilometers of what is now Cambodia and possessed an elaborate canal system.
- Health & Medicine
Lithium might help bone healing
In mice, treatment with lithium assists in the production of a bone-repair protein and improves the healing of fractures.
- Earth
Cat disease associated with flame retardants
An epidemic of hyperthyroidism in house cats may be the result of environmental exposure to certain flame retardants.
- Earth
It’s not nice to fool Mother Nature
Throwing tiny particles into the atmosphere to counteract global warming could cause extended droughts and other weather disruptions.
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The origins of immunity?
In social amoebas, sluglike clusters of usually independent organisms, certain cells take on a protective role that hints at the origin of immune systems in higher animals.
- Animals
Tail singers
The male Anna's hummingbird impresses females and intimidates other males by making a whipping sound with its tail feathers.
- Physics
Road Bumps: Why dirt roads develop a washboard surface
Experiments and a computer simulation show why dirt roads develop a washboard surface, and indicate the only way to prevent it: Drive very slowly.
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Depression Defense: Sick elderly get mood aid from home treatment
Instructional therapy to promote coping strategies helps elderly people with incipient blindness ward off depression—at least in the short run.
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Protein Lineages: Randomness was crucial to ancient genetic changes
Reconstruction of an ancient protein shows how seemingly unimportant mutations paved the way for its evolution into a molecule with an essential modern role.
- Materials Science
Shocking Sheets: Power paper packs a punch
Ultrathin sheets made from cellulose and carbon nanotubes could serve as flexible, versatile batteries.
- Tech
A Moment in the Life of a Cell: Microscopic scan images without intruding
A laser technique similar to a CAT scan produces 3-D images of living cells without the need for chemical staining.
