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Saving money with wasted heat
April 18, 2014 08:18 AM - Megan Fellman, Northwestern University

Nearly two-thirds of energy input is lost as waste heat. Now Northwestern University scientists have discovered a surprising material that is the best in the world at converting waste heat to useful electricity. This outstanding property could be exploited in solid-state thermoelectric devices in a variety of industries, with potentially enormous energy savings.

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At more than 23,000 feet, why don't bar-headed geese get hypoxic?
April 9, 2014 10:04 AM - ENN Staff

The bar-headed goose migratory path takes it over the Himalayan Mountains each year between China and Mongolia to their Indian breeding grounds. This flight path puts them at 23,917 feet above sea level. University of Exeter led study followed these birds to gain insight into their ability to survive these extreme altitudes in hopes that their findings might have future implications for low oxygen medical conditions in humans.

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SPOTLIGHT

How the Zebra got its Stripes

ENN Staff
Why zebras have black and white stripes is a question that has intrigued scientists and spectators for centuries. Evolutionary theories include a form of camouflage, a mechanism of heat management, and disrupting predatory attack by confusing carnivores. In order to better understand the black and white stripe evolution, a research team led by the University of California, Davis, has now examined this riddle systematically, and what they found is that biting flies, including horseflies and tsetse flies, play a major role as the evolutionary driver for zebra stripes. The team mapped the geographic distributions of the seven different species of zebras, horses and asses, and of their subspecies, noting the thickness, locations, and intensity of their stripes on several parts of their bodies. Their next step was to compare these animals' geographic ranges with different variables, including woodland areas, ranges of large predators, temperature, and the geographic distribution of glossinid (tsetse flies) and tabanid (horseflies) biting flies. They then examined where the striped animals and these variables overlapped.

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Let the Earth Day Festivities Begin!

April 17th, 2014
This coming Tuesday, April 22nd, will be the 44th Annual Earth Day. During the premier Earth Day, in 1970, 20 million Americans participated by demonstrated against the deterioration of the environment leading to the creation of the EPA, the Clean Air Act, the Clean Water Act, and the Endangered Species Act.   Earth Day began in [...]
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Drink Up!

April 8th, 2014
At first glance the “Ooho” water container looks like a clear jellyfish after it accidentally washes upon shore, not necessarily something you want to put in your mouth. But if you consider the implications of a disposable water container that does not rely on plastics, you might want to try and give it a sip.
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Earth Hour 2014

March 28th, 2014
What are you doing this Saturday March 28th at 8:30 pm? Are you doing something cliché like going out for a nice dinner and a movie? Instead, how about joining millions of people from around the world by participating in the 8th annual Earth Hour, an event where you shut off your lights to express your [...]
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