5,524 results
5,524 results for: Forests
- Humans
Letters from the August 5, 2006, issue of Science News
Rod is the spoiler While I applaud the work that is looking at the biochemical correlates of aggressive and delinquent behavior, it is important to emphasize that environmental factors still predominate when we are searching for the roots of violence (“Violent Developments: Disruptive kids grow into their behavior,” SN: 5/27/06, p. 328). Although there is […]
- Humans
Letters from the September 23, 2006, issue of Science News
Moo juiced? I live in Northern California, where forest-biomass power plants are common (“Radiation Redux: Forest fires remobilize fallout from bomb tests,” SN: 7/15/06, p. 38). One power plant takes the ashes that result and places them where cows forage. I’m wondering to what level of concentration this process will accumulate the cesium in organic […]
- Humans
Letters from the March 31, 2007, issue of Science News
On the hoof Do cows and other domestic-herd animals really emit more methane than bison and other wild-herd animals emitted before people came along? Do grass, alfalfa, and other pasture plants remove less carbon dioxide than do forests? There were open grasslands before pastures replaced some forests. I hope the people who are researching these […]
- Math
Möbius and his Band
Making a Möbius strip. A Möbius band (or strip) is an intriguing surface with only one side and one edge. You can make one by joining the two ends of a long strip of paper after giving one end a 180-degree twist. An ant can crawl from any point on such a surface to any […]
- Math
Doing the Wave
It was the first home game of the season for the University of Maryland football team. About 48,000 fans had crowded into Byrd Stadium to watch the Terrapins take on the University of Akron Zips. Inevitably, during a lull in what turned out to be a rather one-sided contest, the assembled spectators created their own […]
- Math
Recycling Topology
It’s hard to miss the triangle of three bent arrows that signifies recycling. It appears in newspapers and magazines and on bottles, envelopes, cardboard cartons, and other containers. The recycling symbol. Alternative (incorrect?) rendering of the recycling symbol. Cliff Long made a Möbius band the basis of his wood carving “Bug on a Band.” Photo […]
- Math
Pinpointing Killer Asteroids
Two award-winning high school students' projects focused on new methods for pinpointing asteroids locations.
- Ecosystems
Light All Night
New digital images demonstrate that artificial light from urban areas penetrates deep into some of America's most remote wild places, where it may disrupt ecosystems that have evolved with a nightly quota of darkness.
- Paleontology
Out of the Shadows
An ongoing flurry of fossil finds is triggering a reevaluation of how early mammals and their close kin eked out an existence during the Age of Dinosaurs.
- Materials Science
Making the Most of It
A recent crop of studies demonstrates how nature finds strength in unlikely places.
- Plants
They’re All Part Fungus
Hidden deep in their tissues, all plants probably have fungi that don't make them sick but still may have a big influence.
- Health & Medicine
Blood, Iron, and Gray Hair
Recent findings show that anemia is exceedingly common in elderly people and link the condition to severe health problems, including accelerated physical and mental decline and a shorter life span.
