News
- Math
Whirling to a chaotic finale
A black hole paired with another body can succumb to chaos when they orbit each other, making it more difficult to detect gravitational waves produced by such objects.
- Physics
Groovy ’70s sound keeps X rays tight
Cast aside as a way to reproduce music, LP phonograph records reveal another, unsuspected talent that scientists plan to exploit-focusing X rays.
- Physics
Magnetic snap gives ions extra pop
Magnetic fields pump heat into ions when field lines of opposite orientation snap and reconnect.
- Astronomy
Balloon Sounds Out the Early Universe
A balloon-borne experiment circling Antarctica has measured the curvature of the universe and revealed that it's perfectly flat.
- Health & Medicine
Calcium may become a dieter’s best friend
Enriching the diet with calcium, especially from dairy products, can switch the body's fat cells from storing calories to burning them.
- Health & Medicine
‘Bubble’ babies thrive on gene therapy
Gene therapy to repair mutations that thwart development of essential immune cells has helped three babies to overcome severe combined immunodeficiency, in which a child is born without a functional immune system.
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Placebos for depression attract scrutiny
FDA clinical trials suggest that placebos provide substantial relief to depressed patients, but debate continues about whether it's ethical to use placebos in studies of antidepressant drugs.
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Do oxpeckers help or mostly just freeload?
A textbook example of mutualism—birds that ride around picking ticks off big African mammals—may not be mutually beneficial at all.
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Cloning extends life of cells—and cows?
A study of cloned cows provides reassurance that cloned animals won't die prematurely and may even live extra-long.
- Physics
Cooled device unveils a quantum limit
A novel suspended device chilled near absolute zero demonstrates the existence of a basic unit, or quantum, of heat conductance—the first evidence of quantum mechanics in mechanical structures.
- Earth
Global warming is marmot wake-up call
Marmots are coming out of hibernation earlier, while chipmunks and ground squirrels sleep longer-effects that could be attributed to global warming.
- Archaeology
Guard dogs and horse riders
More than 5,000 years ago, the Botai people of central Asia had ritual practices that appeared in many later cultures.
