Uncategorized
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Light Impacts
Depending on when it's encountered, blue light can be more effective than other hues (or even white light) at waking people, setting their biological clocks, and maximizing visual acuity.
By Janet Raloff -
19682
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. Although there is no single factor underlying aggressive behavior in children, my own 30-plus years looking into the relationship […]
By Science News -
Violent Developments
New research has identified a spectrum of interacting elements that contribute to impulsive violence in young people.
By Bruce Bower -
Humans
Letters from the May 20, 2006, issue of Science News
Forget dessert In “Got Data? Consuming calcium, dairy doesn’t keep off weight” (SN: 3/11/06, p. 147), you report, “Every 4 years, each volunteer completed a questionnaire about his body weight and dietary habits.” Any dieter knows that it is next to impossible to remember what one has eaten 4 days ago. Any more details on […]
By Science News -
From the May 16, 1936, issue
Long-lived cicadas, zinc coatings for wire, and schizophrenia's cause.
By Science News -
Darwin and Evolution
This online exhibit from the American Museum of Natural History is a fascinating account of how Charles Darwin developed his theory of evolution and how that theory is regarded today. The site includes a number of audio and video files and a link to a webcam that features a Galápagos tortoise. Go to: http://www.amnh.org/exhibitions/darwin/?src=e_f
By Science News -
Humans
Indy’s Best: Young scientists cross the finish line
High school students from 47 countries gathered in Indianapolis last week to compete for scholarships and other prizes in the 2006 Intel International Science and Engineering Fair.
By Emily Sohn -
Eye for Growth: New protein prompts optic nerve regrowth
A protein recently isolated from white blood cells could offer a new way to repair nerve cells damaged by injury or disease.
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Animals
Jay Watch: Birds get sneakier when spies lurk
A scrub jay storing food takes note of any other jay that watches it and later defends the hoard accordingly.
By Susan Milius -
Anthropology
Hybrid-Driven Evolution: Genomes show complexity of human-chimp split
A controversial new genetic comparison suggests that human and chimpanzee ancestors interbred for several million years before evolving into reproductively separate species no more than 6.3 million years ago.
By Bruce Bower