News
- Earth
Pieces of a Pulverizer? Sediment fragments may be from killer space rock
Scientists sifting sediments laid down just after Earth's most devastating mass extinction 250 million years ago may have found minuscule fragments of the extraterrestrial object that caused the catastrophe.
- Health & Medicine
Rebuilding the Heart: Marrow cells boost cardiac recovery
Inserting a person's own bone marrow stem cells into an ailing heart via a catheter can improve heart and lung function in such patients.
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- Health & Medicine
Protein may predict heart problems
Low blood concentrations of a protein called adiponectin may signal risk of heart disease.
- Health & Medicine
Defibrillator access pays dividends
Ready access to a heart defibrillator can boost the survival chances of someone who suffers a cardiac arrest.
- Health & Medicine
Weight-loss compound may cause arrhythmia
The weight-loss supplement Metabolife 356 causes subtle changes in heartbeat in test subjects.
- Health & Medicine
Greek diet reduces inflammatory proteins
People on a Mediterranean diet rich in olive oil and fresh fruits have lower blood concentrations of several inflammatory proteins linked to atherosclerosis.
- Health & Medicine
SARS virus can spread in lab animals
At least two types of mammals can acquire and transmit the virus that causes severe acute respiratory syndrome (SARS), and Chinese animal traders have high rates of past exposure to the virus.
- Anthropology
Anklebone kicks up primate debate
The discoverers of a roughly 40-million-year-old anklebone in Myanmar say that it supports the controversial theory that anthropoids, a primate group that includes monkeys, apes, and humans, originated in Asia.
- Health & Medicine
Acid blockers stop stomach ulcers, too
People who get ulcers from frequent use of anti-inflammatory painkillers can lessen their risk by simultaneously taking acid-blocking drugs.
- Earth
Toxic cleanups get a boost
Researchers have developed and field-tested a new technique that identifies specific soil microbes that can break down environmental pollutants.
- Ecosystems
Will Climate Change Depose Monarchs? Model predicts too-wet winter refuges
A computer analysis suggests that eastern monarch butterflies may not be able to tolerate the increasingly moist climate in Mexico, their current wintering site.
