Uncategorized
- Animals
Dee for Danger: Chickadees add notes as threat grows
Chickadees change their alarm calls depending on how serious a lurking predator seems.
- Paleontology
Killer Bite: Ancient, tiny mammal probably used venom
Paleontologists have unearthed the remains of an ancient, mouse-size mammal that seems to have had a venomous bite.
- Humans
Letters from the June 25, 2005, issue of Science News
Dark secret? “Dark Influence: Most of the universe’s matter is out of sight, but not out of mind” (SN: 4/23/05, p. 264) made me wonder about the possibility of a continuum of matter. Could part of the problem in identifying dark matter be that only part of the spectrum of matter is observable by our […]
- Health & Medicine
Alcohol increases bacterium’s virulence
Drinking alcohol can increase the ability of one type of bacteria to cause disease.
- Health & Medicine
Ready-to-eat spinach bears tough microbes
Bagged spinach may contain a significant number of bacteria, many of which are resistant to several antibiotics.
- Health & Medicine
Raisins may combat cavity-causing bacteria
Raisins may fight the bacteria that cause cavities rather than contribute to tooth decay.
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Biofilm-producing bacteria could stabilize buildings
Bacteria that ooze a sticky matrix could help stabilize the soil beneath structures in earthquake-prone areas.
- Health & Medicine
Heart attack treatment: Better late than never
A new study contradicts the notion that heart attacks run their course in less than a day and suggests that even delayed treatment can preserve endangered heart tissue.
- Health & Medicine
Cocaine abusers get more heart aneurysms
Regular cocaine users are about four times as likely as nonusers to have an aneurysm in a coronary artery.
- Physics
Probing chemical signatures in an earthy way
Scientists have performed nuclear magnetic resonance analysis using Earth's magnetic field.
- Planetary Science
Opportunity rolls out of Purgatory
After being stuck for nearly 5 weeks, the Mars rover Opportunity has freed itself from a sand trap on the Red Planet.
- Chemistry
Energy on Ice
Recent efforts to unlock a frozen source of natural gas deep under the permafrost and ocean floor have energized prospects for a methane-hydrate industry.
