Humans
We summarize the week's scientific breakthroughs every Thursday.
- Health & Medicine
Stem cells not required
Insulin-producing cells in the pancreas proliferate by cell division, unlike other body tissues, which regenerate from adult stem cells.
- Humans
From the May 22, 1937, issue
Hidden beauty revealed, an electric french horn, and safer toy balloons.
- Humans
Hot Competition: Students display winning projects
High school students from 51 countries gathered in Albuquerque last week to compete for scholarships and other prizes at the 2007 Intel International Science and Engineering Fair.
- Health & Medicine
Circadian Fix: Viagra may lessen effects of jet lag
Sildenafil, the male-impotence drug marketed as Viagra, helps laboratory rodents recovery from circadian disruptions similar to jet lag.
- Health & Medicine
Chocolate Constituent Bests Fluoride
The beans used to make chocolate can also render a tooth-decay-fighting extract; unfortunately, it's bitter, not chocolaty.
- Health & Medicine
Nail-gun injuries shoot up
Nail-gun injuries among do-it-yourself carpenters have tripled since 1991.
- Anthropology
When female chimps become baby killers
Although long thought to be rare, instances in which female chimps band together to kill other females' infants occur fairly regularly under certain circumstances.
- Health & Medicine
Migraines in men linked to heart attack risk
Men who experience migraine headaches are somewhat more likely to have heart attacks than are other men.
- Health & Medicine
Dangerous History
The genome of the TB bacterium has small but significant pockets of diversity, giving scientists new targets for preventing and treating the disease.
- Humans
Letters from the May 26, 2007, issue of Science News
It’s cold out there I couldn’t help noticing the last sentence of “World’s climate map gets an update” (SN: 3/24/07, p. 190): “One of the system’s 30 possible climate subtypes—a temperate climate with a cold, dry summer—wasn’t found anywhere on Earth.” The comment reveals that the writer has never read Mark Twain’s comment that the […]
- Health & Medicine
Childhood Vitamin D—A New Benefit?
Vitamin D may prevent symptoms of asthma in toddlers.
- Humans
From the May 15, 1937, issue
A new seat of learning, hazards to workers, and a machine with feeling.
