Uncategorized
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19875
This article states that “those who get the [bariatric] surgery live longer than those who don’t.” That raises the question whether liposuction to reduce a disproportionately large waistline in a nonobese person would yield medical benefits such as a reduced risk for coronary heart disease. Angela LamberthIndian Island, Maine
- Health & Medicine
If You Can Stomach It: Obesity surgery extends life span
Drastic weight loss achieved through gastric bypass and other stomach surgeries improves long-term survival for very obese people.
- Physics
Frizzed molecular carpets
Measurements of the speed with which heat travels along single hydrocarbon molecules could aid in the design of molecular electronics.
- Health & Medicine
Vaccine targets ovarian-cancer cells
A vaccine for ovarian cancer enables some women who've undergone chemotherapy to stay in remission.
- Archaeology
Map yields new view of ancient city
A new map shows that Angkor, the world's largest preindustrial city, covered more than 1,000 square kilometers of what is now Cambodia and possessed an elaborate canal system.
- Computing
Squashing Worms
Defeating computer worms that mutate will take some smart defense strategies.
- Humans
Letters from the August 25, 2007, issue of Science News
Where did the chicken cross? “Chicken of the Sea: Poultry may have reached Americas via Polynesia,” (SN: 6/9/07, p. 356) states, “The most likely sea route ran north of Hawaii and down America’s Pacific coast.” The Polynesians were master mariners, so anything is possible, but continuing east from Tonga to South America is an extension […]
- Health & Medicine
Lithium might help bone healing
In mice, treatment with lithium assists in the production of a bone-repair protein and improves the healing of fractures.
- Earth
Cat disease associated with flame retardants
An epidemic of hyperthyroidism in house cats may be the result of environmental exposure to certain flame retardants.
- Earth
It’s not nice to fool Mother Nature
Throwing tiny particles into the atmosphere to counteract global warming could cause extended droughts and other weather disruptions.
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19874
You state in this article that “an increase in the atmospheric concentration of carbon dioxide, not an increase in solar radiation” is responsible for current global warming. What is the scientific—not political—basis for that remark? Warren FinleyLaguna Beach, Calif. Increasing solar radiation doesn’t affect climate change? Doesn’t changing the thermostat change the temperature in a […]
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The origins of immunity?
In social amoebas, sluglike clusters of usually independent organisms, certain cells take on a protective role that hints at the origin of immune systems in higher animals.
