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A Stirring Tale from inside Earth
A new theory describing how heat escapes from the planet's interior suggests a deeper, bumpier boundary separating the mantle's upper and lower layers.
Newly launched spacecraft loses its cool
A half hour after launch, an infrared telescope vented its entire supply of frozen helium into space, ending the planned 4-month mission.
Why cutting fats may harm the heart
For many people, low-fat diets may increase heart-disease risks by triggering adverse changes among carrier molecules that shuttle fatty substances through the blood.
DNA data yield new human-origins view
DNA evidence suggests that, beginning around 200,000 years ago, separate African and Asian populations evolved into anatomically modern humans.
Study links acid reflux, esophageal cancer
Swedish researchers have discovered a correlation between heartburn and an esophageal cancer called adenocarcinoma.
Amoeba betrayed by anticannibal defense
The single-celled predator Amoeba proteus releases a chemical that scares away some of its prey, but that substance may also protect the amoeba from cannibals.
Pumping electrons: Look Ma! No heat!
A new way to make current flow in tiny electronic devices offers the possibility of eliminating the dissipation of energy as circuit-damaging heat.
Drug blockades blood vessels' energy
The anticancer drug angiostatin blocks the energy storage of cells in blood vessels that must grow to sustain tumors.
Microscopic vessels merge to mix molecules
A new technique that mixes together miniscule amounts of chemicals can help researchers study the biochemical reactions that occur in cells.
Minds on the Move
Babies extend their reach into a world of thought and action
Dynamic systems researchers examine the interplay of perception and action that may stimulate child development without the need for genetic programs or symbolic computations by the brain.
When Meteorologists See Red
Worldwide warming has tripped up U.S. forecasters
Forecasters are starting to take global warming into account when issuing seasonal predictions for U.S. weather.
Biomedicine
Chemotherapy combo boosts survival
Five new studies indicate that adding chemotherapy to current treatments for invasive cervical cancer boosts survival and should become the new standard of care.
Transplant drug increases cancer risk
Cyclosporine, a drug used to prevent rejection of transplanted organs, may trigger cancer cells to become more aggressive.
Chemistry
Bloodless test for glucose runs skin-deep
A new technique may enable people with diabetes to check blood glucose levels by measuring the glucose that diffuses naturally through the skin.
Paper or plastic? New test has the answer
Researchers may have found a way to assess the paper content of powdered plastic waste during recycling procedures.
Earth Science
Pinning L.A. quakes down to a fault
Seismologists have identified a dangerous fault hidden beneath Los Angeles.
Watching a continent splinter
Eastern Africa is splitting away from the bulk of the continent because two tectonic plates are rotating like scissor blades.
1998: Warmest year of a past millennium
An analysis of temperature indicators including tree rings and glacial ice concludes that the current millennium is ending with the highest temperatures of the entire period.
