Humans
We summarize the week's scientific breakthroughs every Thursday.
- Humans
From the March 13, 1937, issue
Man helping snake, paraffin lenses for neutrons, and glass with a past.
- Humans
The Next Generation: Intel Science Talent Search honors high school achievers
A 17-year-old from Oklahoma City who built a homemade Raman spectra system took first place at this year's Intel Science Talent Search.
- Anthropology
Ancient Slow Growth: Fossil teeth show roots of human development
An extended period of childhood evolved in people at least 160,000 years ago.
- Health & Medicine
Brain Fix: Stem cells supply missing enzyme
Brain stem cells implanted into sick mice restored a missing enzyme and extended life span by 70 percent.
- Health & Medicine
Emerging bug pilfers DNA
A virulent bacterium invading U.S. hospitals and the battlefields of the Middle East pilfers its genes from other bacteria.
- Humans
Letters from the March 17, 2007, issue of Science News
Disputable thesis “Counterintuitive Toxicity: Increasingly, scientists are finding that they can’t predict a poison’s low-dose effects” (SN: 1/20/07, p. 40) took a wrong turn into Hormesis Swamp. The hormesis thesis has been thoroughly discredited by all major radiation organizations and professional societies, and its past conferences have been sponsored by tobacco companies and the U.S. […]
- Humans
From the March 6, 1937, issue
Machines creating new jobs, stopping smoke with sound, and conflicts over atomic structure.
- Humans
Bad Influence: TV, movies linked to adolescent smoking
White adolescents who have frequent exposure to television and R-rated movies are more likely to try smoking than are their peers with less exposure to these media.
- Humans
Letters from the March 10, 2007, issue of Science News
Cosmic cling At least on Earth, rock impacts result in charging of the particles (“Rocky Finding: Evidence of extrasolar asteroid belt,” SN: 1/6/07, p. 5). In space, wouldn’t this have a great effect on the motion of the rocks? Stuart HoenigTucson, Ariz. According to researchers, it’s true that the electrostatic charging of space dust and […]
- Archaeology
Spicy finds from before Columbus
Ancient Americans cultivated and ate chili peppers at least 6,100 years ago, setting the stage for the spicy condiment to spread throughout the world after Columbus' voyages to the New World.
- Health & Medicine
Long-Term Threat
Survivors of a childhood cancer face a sixfold risk of developing a new cancer later in life, compared with people in the general population.
- Humans
Marlin Crash May Be Worse Than Reported
A newly identified species of billfish resembles white marlins so closely that its presence might be masking how decimated Atlantic stocks of the marlin really are.
