Uncategorized
- Earth
Leaden streets
Street grit is the probable source of lead in urban homes, and flaking paint from overpasses and bridges is a major contributor.
- Health & Medicine
Moldy whiff kills brain cells
A common black mold that blooms on moist cellulose-based materials produces a toxin that can kill certain brain cells.
- Chemistry
Busted bonds
The tenacious bonds between two carbon atoms can be broken in a surprisingly simple process.
- Anthropology
Capuchins resist inbreeding chances
Wild capuchin monkeys manage to avoid inbreeding, despite rampant opportunities for high-status fathers to mate with their grown daughters.
- Astronomy
Glassy galaxies
Astronomers have found clouds of sand crystals resembling crushed glass around 21 infrared-bright galaxies.
- Animals
Woodpecker video is challenged and defended
The video released last spring as evidence that the ivory-billed woodpecker exists may show a common pileated woodpecker, some critics say.
- Math
Winning with a Winding Random Walk
A two-dimensional random walk takes a frustratingly long time to complete a circuit.
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- Humans
Explore Your Knowledge
Test your math and science knowledge at the National Center for Education Statistics Web site. Select a test topic and grade level (4th or 8th grade), then see how you do on a set of multiple-choice questions. The questions are from the Trends in International Mathematics and Science Study (TIMSS). Go to: http://nces.ed.gov/nceskids/eyk/
- Humans
Science’s New Guard: Winners of annual competition get honors and hefty scholarships
For her water-quality research project, an 18-year-old from Utah earned top honors among 40 competitors in the final phase of the annual Intel Science Talent Search.
- Materials Science
The art of the fold
With DNA origami, researchers can make complex nanostructures.
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19657
Unless the writer is deliberately implying an archaic theory of evolution in this article, the statement “Ultrasonic perception may have developed as the frogs (Amolops tormotus) struggled to hear each other . . .” cannot be true. That’s not how natural selection works. John WymoreAlbuquerque, N.M. Frogs that could hear frequencies higher than the water’s […]
