All Stories
- Chemistry
An inexpensive catalyst generates hydrogen
A new, inexpensive catalyst could make hydrogen generation cleaner.
- Anthropology
Lucy’s kind takes humanlike turn
A new analysis of fossils from a more than 3-million-year-old species in the human evolutionary family reveals that the males were only moderately larger than the females, a finding that has implications for ancient social behavior.
- Paleontology
Learning from the Present
New field studies of unfossilized bones, as well as databases full of information about current fossil excavations and previous fossil finds, are providing insights into how complete—or incomplete—Earth's fossil record may be.
- Astronomy
Supernova Spectacular
Studying starburst galaxies, relatively nearby galaxies that are undergoing a tremendous rate of star formation, may reveal how elliptical galaxies arose and black holes grew in the early universe.
- Humans
From the July 15, 1933, issue
LIVELY YOUNG MARMOSETS SURVIVE IN CAPTIVITY Two lively, chattering young marmosets are growing up in San Francisco without the slightest notion of what “rare specimens” they are. They have a very great distinction of surviving birth in captivity. Naturalists say that this type of New World monkey is often born in captivity but usually the […]
- Earth
National Atlas
Provided by the U.S. Department of the Interior, this Web site features an interactive map generator that allows users to view and download custom maps of the United States. The maps access a database that includes information about the nation’s agriculture, biological resources, climate, environment, geology, history, transportation, watersheds, population distribution, county boundaries, and other […]
- Math
Improving the Odds in RISK
RISK is a classic board game of global conquest. First published in 1959, this war game remains a popular pastime–and continues to attract mathematical attention. Recent analyses reveal that the chances of winning a battle are considerably more favorable for the attacker than was originally suspected. “The logical recommendation is . . . for the […]
- Math
Improving the Odds in RISK
RISK is a classic board game of global conquest. First published in 1959, this war game remains a popular pastime–and continues to attract mathematical attention. Recent analyses reveal that the chances of winning a battle are considerably more favorable for the attacker than was originally suspected. “The logical recommendation is . . . for the […]
- Earth
Digging for Fire: Burning peat underlies Mali’s hot ground
Superheated ground and smoking potholes in northern Mali are evidence not of volcanic activity but of a layer of peat that is burning 2 feet below the desert surface.
- Health & Medicine
DNA Differences Add Risk: Altered genes show up in Lou Gehrig’s disease
People with amyotrophic lateral sclerosis (ALS) are more likely than healthy people to have certain variations in the vascular endothelial growth factor (VEGF) gene, suggesting variant VEGF contributes to the disease.
- Tech
Soft blow hardens Columbia-disaster theory
By blasting a gaping hole in a shuttle wing with a block of foam fired from a gun, a NASA investigative team appears to have confirmed the leading theory of what caused the Feb. 1 destruction of the space shuttle Columbia.
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19331
Since “most pleural abnormalities don’t actually interfere with lung function,” the statement that dangerous asbestos exposures extended beyond the workplace in Libby, Mont., must be considered an opinion or assumption, not something confirmed by scientific studies. The heading for the article could just as well have ended “may only be a minor problem.” Bud MarchettePebble […]
