News
- Astronomy
Eros: The movie
Close-up views of the asteroid 433 Eros, showing jagged rocks, fields of boulders, and debris-filled craters, are featured in a minute-long movie.
- Astronomy
Senior star may have comets
Astronomers have found what could be the first evidence of water-bearing objects that orbit a star other than the sun.
- Health & Medicine
Could this be the end of the monthly period?
Two compounds stop menstruation in monkeys, suggesting that similar drugs might someday enable women to bypass monthly bleeding.
- Health & Medicine
Protein may post lung cancer warning
The protein Ki-67, sometimes present on tissue lining the lungs, may act as a warning sign of lung cancer risk for ex-smokers.
- Health & Medicine
Once a cesarean, always a cesarean?
Expectant mothers who've already given birth by cesarean section put themselves at increased risk of uterine rupture by trying vaginal birth.
- Health & Medicine
Cox-2 shows up in stomach cancers
The inflammatory enzyme Cox-2 is present in stomach tumors, suggesting that drugs that inhibit the enzyme might help supress tumor formation.
- Health & Medicine
New drug fights a chronic leukemia
A genetically engineered drug that fuses an antibody to a toxin attacks cancerous cells in hairy-cell leukemia.
- Physics
Electrons rock and roll in nanotubes
New probes of tiny carbon nanotubes reveal that the wavelike, quantum nature of electrons plays a role in tube properties and may even make possible novel electronic components that harness quantum effects.
- Astronomy
Light’s Debut: Good Morning, Starshine!
Astronomers have at last detected signs of one of the earliest and least-understood eras in the universe: the murky time just before the first stars and quasars flooded the cosmos with light.
- Animals
Bat bites bird. . .in migration attacks
The largest bat in Europe may hunt down migrating birds.
- Tech
New method lights a path for solar cells
Using a technique in which chemical ingredients assemble themselves, a research team has developed a potentially inexpensive way of making solar cells.
- Ecosystems
Marine plankton put nitrogen in a fix
New genetic analyses of tropical marine microorganisms hint that some species are converting significant amounts of atmospheric nitrogen into nutrients, helping to fortify the base of the ocean's food pyramid.
