News
- Earth
A different spin
A change in the properties of Earth's mantle at high pressure and temperature may influence seismic waves in a novel way.
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Exercise steps up as depression buster
Aerobic exercise, done alone or in a group, eases depression almost as well as a common antidepressant does.
- Planetary Science
Martian rovers survive storm
Three months after being stymied by a planet-wide dust storm, NASA's twin Mars rovers are back in action.
- Animals
Crowcam: Camera on bird’s tail captures bird ingenuity
Video cameras attached to tropical crows record the birds' use of plant stems as tools to dig out food.
- Health & Medicine
Shields Down: A cancer-fighting gene declines in old age
Decline of an important anti-cancer gene could contribute to increased cancer risk among the elderly.
- Astronomy
Match Made in Heaven: Nearby galaxies resemble faraway type
Several nearby galaxies seem nearly identical to some of the remotest galaxies known, offering a glimpse of the era when galaxies first formed.
- Health & Medicine
Fueling a Flu Debate: Do vaccinations save lives among the elderly?
Flu shots seem to prevent some deaths and limit hospitalizations for pneumonia in elderly people.
- Paleontology
Just a quick bite
Saber-toothed cats living in North America around 10,000 years ago had a much weaker bite than modern big cats.
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No Slippery Slope: Physician-aided deaths are rare among those presumed vulnerable
Vulnerable people such as the very old or the mentally ill do not seek out physician-assisted suicide in disproportionate numbers, as critics of the practice feared they would.
- Archaeology
Lake-Bottom Bounty: Some Arctic sediments didn’t erode during recent ice ages
Sediments in a few lakes in northeastern Canada were not scoured away during recent ice ages, a surprising find that could prove a boon to climate researchers.
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Dangerous DNA: Genes linked to suicidal thoughts with med use
Two gene variations mark many patients who develop suicidal thoughts when treated with widely used antidepressants.
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