TOP 100 CAMPING SITES
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| The Truth about Cats and Dogs The text transcript is currently not available. [More] rss.sciam.com |
Pride: Deadly Sin or Social Lubricant? Think back to the last time that you beat a friend at a card game or outdid your previous record in a 5K race. Did you try to suppress your satisfaction so that others wouldn’t think you were conceited? In fact, new research suggests that pride, as long as it stems from a real success and doesn’t slide into know-it-all obnoxiousness or narcissism, not only pushes us to keep trying hard but actually makes others like us more.“Contrary to the idea that pride is an emotion that we should tamp down, the experience of pride can be very socially adaptive,” says Lisa Williams, a graduate student in psychology at Northeastern University and the new study’s lead author. She and Northeastern psychologist David DeSteno found that people who were told they had excelled on a spatial rotation task subsequently took more control over a similar, team-based task, regardless of their mood or how competent they reported feeling. Both teammates and outside observers rated proud participants as more dominant and as more likable than participants who had not been tricked into feeling proud. [More] rss.sciam.com |
The Origin of Life on Earth (preview) Every living cell, even the simplest bacterium, teems with molecular contraptions that would be the envy of any nanotechnologist. As they incessantly shake or spin or crawl around the cell, these machines cut, paste and copy genetic molecules, shuttle nutrients around or turn them into energy, build and repair cellular membranes, relay mechanical, chemical or electrical messages--the list goes on and on, and new discoveries add to it all the time.It is virtually impossible to imagine how a cell’s machines, which are mostly protein-based catalysts called enzymes, could have formed spontaneously as life first arose from nonliving matter around 3.7 billion years ago. To be sure, under the right conditions some building blocks of proteins, the amino acids, form easily from simpler chemicals, as Stanley L. Miller and Harold C. Urey of the University of Chicago discovered in pioneering experiments in the 1950s. But going from there to proteins and enzymes is a different matter. [More] rss.sciam.com |
"Albedo Yachts" and Marine Clouds: A Cure for Climate Change? Here's an idea to cool Earth: make marine clouds into better reflectors of sunlight. After all, clouds already reflect more of the sun's radiation back into space than the amount trapped by human emissions of carbon dioxide. So why not make them even more effective? [More] rss.sciam.com |
Hybrid Solar Panels Combine Photovoltaics with Thermoelectricity Tar and shingles are hardly environmentally friendly materials, so the U.S. Department of Energy (DOE) hopes to soon help homeowners and businesses replace the roofs over their heads with something greener. To that end, the DOE awarded Weidlinger Associates , a New York City-based structural engineering firm, a $150,000 grant earlier this month (matched by a 10-percent commitment from the state) to develop durable hybrid solar roofing panels with integrated photovoltaic cells and thermoelectric materials that harvest the sun's energy to produce both electricity and hot water for buildings. [More] rss.sciam.com |