Uncategorized
- Anthropology
Mental Leap
As scientists discover traits shared by human and ape ancestors millions of years ago, they try to fill in the gaps of human evolution.
- Chemistry
Target Practice
As they study the biochemical processes that make Mycobacterium tuberculosis tick, researchers are finding new targets to exploit to combat the microbe.
- Humans
Letters from the September 2, 2006, issue of Science News
B line “A Vexing Enigma: New insights confront chronic fatigue syndrome” (SN: 7/1/06, p. 10) implies that there’s not an available cure for chronic fatigue syndrome. I was amazed to find no mention of vitamin B12. I can attest to the remarkable effect. Earl L. PyeOak Hills, Calif. Limited evidence suggests that vitamin B12 absorption […]
- Math
Making Sense of the Web’s Structure
Pioneering studies of social networks and the Web's structure lead to a prestigious prize.
- Humans
From the August 22, 1936, issue
Hummingbirds in flight, a cosmic-ray detector, and rare metals in meteorites.
- Humans
ThinkQuest Winners
In the ThinkQuest competition, teams of students from around the world create educational Web sites. Take a look at this year’s winners, which feature imaginative and engaging efforts on such topics as avian flu, mathematics history, information inequality in the digital age, minerals and mining, artificial intelligence, and more. Go to: http://www.thinkquest.org/aug05may06/index.shtml
- Earth
Mercury Rising: Natural wildfires release pollutant
Fires in high-latitude forests and peaty soils of the Northern Hemisphere may loft hundreds of tons of mercury into the atmosphere each year.
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Pathogen Preference: Infected amoebas flourish in cooling towers
Cooling towers appear to be more effective than natural waters at fostering novel bacterial species that cause illnesses in people.
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19725
From literature I’ve reviewed, there can be significant differences between small-building cooling towers and large cooling towers—at a power plant, for instance. A large cooling tower is designed with significantly more water circulation, flushing, and chemical treatment that reduce the potential for pathogens. The researchers should be encouraged to not lump all “cooling towers” in […]
- Chemistry
Lacy molecular order
A lacy honeycomb arrangement of molecules on copper suggests the possibility of creating useful nanoscale patterns on surfaces by fine-tuning intermolecular forces.
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19724
I wonder if the researchers in this article have made any observations of the prevalence of males mating with juvenile females when mature females are present in the environment. Carolyn CramoyLake Placid, N.Y. Maydianne Andrade of the University of Toronto at Scarborough says that no information on that is available yet. She and her team […]
- Animals
Underage Spiders: Males show unexpected interest in young mates
Male Australian redback spiders mate readily with females too young to have external openings to their reproductive tracts, a tactic that reduces the male's risk of getting cannibalized.
