TOP 100 CAMPING SITES
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| Is that your power plant on my roof? Duke Energy wants to put a power plant on your house. [More] rss.sciam.com |
Crawling May Be Unnecessary for Normal Child Development Babies must crawl before they walk, parents and pediatricians agree. Crawling has also been held up as a prerequisite to the normal progression of other aspects of neuromuscular and neurological development, such as hand-eye coordination and social maturation. But new research may knock the legs out from under this conventional wisdom.According to anthropologist David Tracer of the University of Colorado at Boulder, babies of the Au hunter-gatherers of Pa­pua New Guinea do not go through a crawling stage. Instead their parents and other caregivers carry them until they can walk. Yet Au children do not appear to suffer any ill effects from skipping this phase. In a presentation given to the American Association of Physical Anthropologists in Chicago this past April, Tracer argued that, in fact, not crawling may be entirely normal and possibly even adaptive. [More] rss.sciam.com |
Splash, Soak and Sip Less than three hours from New York City, Saratoga Springs, N.Y., has the air of a health-giving resort for the masses that had been rendered obsolete. travel.nytimes.com |
Is birth control the answer to environmental ills? Population growth , now at roughly 78 million extra people per year, is the don't-go-there zone of modern environmentalism and political discourse. [More] rss.sciam.com |
What Undersea Vents Reveal about Life's Origins (preview) Few places on Earth’s continents remain to be explored, and it is unlikely that many new natural wonders await discovery in some forgotten corner. But below the ocean surface is a different story. We know more about the facade of Mars than about the 75 percent of our own planet’s surface that lies underwater. Untold surprises await us there.One such revelation occurred in December 2000. An expedition mapping a submerged mountain known as the Atlantis Massif, midway between Bermuda and the Canary Islands and half a mile under the surface of the North Atlantic, came across a pillar of white rock as tall as a 20-story building rising from the sea­floor. Using the remotely operated ArgoII vehicle and the manned submersible Alvin , scientists surveyed and sampled the mysterious formation. Although time constraints limited their investigation to a single Alvin dive, the researchers were able to collect enough information to determine that the white pillar was just one of several such structures in the area that were emitting heated seawater. They had discovered a field of undersea hot springs they named the Lost City Hydrothermal Field. It was unlike anything seen before, including the now famous black smokers. [More] rss.sciam.com |