News
- Health & Medicine
Pregnancy spurs a tumor suppressor
Pregnancy hormones may prime breast cells to maintain a supply of p53, a cancer suppressor protein, thus accounting for why women who have undergone pregnancy generally have a lower breast cancer risk than do others.
- Health & Medicine
Hormone wards off immune cells in womb
A hormone known for its involvement in the brain's response to stress also plays a key role in shielding the developing embryo from its mother's immune system.
- Health & Medicine
AMA: Drugs are for anthrax, not fear
Doctors should not use antibiotics prophylactically against anthrax unless there is good reason to believe the individual had encountered the germs directly, the American Medical Association advises.
- Health & Medicine
Retail meats host drug-resistant bacteria
Three studies appear to tie livestock growth promoters to risk of serious human disease.
- Earth
Lowland tree loss threatens cloud forests
Changes in regional climate brought about by large-scale deforestation in the eastern lowlands of Central America are affecting weather in the mountains downwind, imperiling ecosystems there.
- Paleontology
Lemurs reveal clues to ancient Asian roots
A diminutive lemur species inhabited what is now central Pakistan about 30 million years ago, a new fossil find suggests.
- Chemistry
Nobel recognizes three for handy chemistry
The 2001 Nobel Prize in Chemistry honors research that led to new chemicals, materials, and drugs, including widely used heart medicines.
- Ecosystems
Another World Hides inside Coral Reefs
The first systematic survey of crevices inside Red Sea reefs reveals abundant filter feeders that may capture significant nutrients for the reef.
- Chemistry
Nobel prize: Chemistry
The 2001 Nobel Prize in Chemistry recognizes the development of molecules for catalyzing fundamental reactions used to make countless pharmaceuticals.
- Physics
Nobel prize: Physics
Three scientists have jointly won the 2001 Nobel Prize in Physics for creating the first samples, 6 years ago, of a long-sought and strange state of matter called a Bose-Einstein condensate.
- Health & Medicine
Nobel prize: Physiology or medicine
The 2001 Nobel Prize in Physiology or Medicine goes to three researchers who pioneered work in cell division.
- Paleontology
Large shadows fell on Cretaceous landscape
Paleontologists have unearthed the remains of what they believe could be the largest flying creature yet discovered—a 12-meter-wingspan pterosaur.
