General Electric to debut world’s largest wind turbine in UK

April 24, 2018 by  
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General Electric just announced that it will begin testing the world’s largest wind turbine – the Haliade-X – at its facilities in Blyth, England. General Electric’s renewable energy department signed a five-year contract with the British government-funded Offshore Renewable Energy Catapult (OREC) to begin trials of the 12-megawatt turbine. “This is an important agreement because it will enable us to prove Haliade-X in a faster way by putting it under controlled and extreme conditions,” GE Offshore Wind president and CEO John Lavelle said in a statement . The United Kingdom plans to rapidly develop its offshore wind capacity, with an estimated growth to 30 gigawatts by 2030 – five times greater than its current capacity. Speaking to Reuters , British energy and clean growth minister Claire Perry cited the contract between GE and OREC as a shining example of the country’s advanced research and testing facilities. The largest currently operational wind turbine is also in the United Kingdom ; MHI Vestas’ 9 MW turbines generate power in the Vattenfall wind farm off the shore of Aberdeen, Scotland . Related: GE develops hybrid jet engine and battery to supplement California renewables In addition to the formal approval of testing, the agreement includes funding from Innovate UK and the European Regional Development Fund to create the world’s most powerful grid emulation system at OREC’s Blyth headquarters. General Electric ‘s move to develop the largest turbine follows a general trend in the industry, in which producers are aiming to create the biggest turbines to reduce the cost of energy produced and to increase the amount of energy generated at each turbine. With money to be made, the future of wind energy looks to be bigger than ever. Via Reuters Images via GE and Depositphotos

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General Electric to debut world’s largest wind turbine in UK

Cows could one day be the largest land mammals left because of human activity

April 24, 2018 by  
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The world’s biggest land mammal is the African bush elephant , which can be up to 13 feet tall and 24 feet long. But this elephant — and giraffes, hippos and other large animals — could go extinct because of human activity, leaving the domestic cow as the biggest terrestrial mammal in a couple centuries. In a recent study, researchers scrutinized large mammal extinction as humans spread, and their study is, according to the University of New Mexico , “the first to quantitatively show … that size selective extinction is a hallmark of human activities and not the norm in mammal evolution.” Thousands of years ago, the spread of archaic humans from Africa coincided with extinction of megafauna, or large mammals, like sabre-toothed tigers and mammoths, The Guardian reported. “One of the most surprising finds was that 125,000 years ago, the average body size of mammals on Africa was already 50 percent smaller than on other continents,” said Felisa Smith, professor at the University of New Mexico and lead author of the study. “We suspect this means that archaic humans and other hominins had already influenced mammal diversity and body size in the late-Pleistocene.” Related: The world’s last male northern white rhino has died in Kenya The researchers compiled extensive data around mammal body size, geographic location, climate and extinction status in the past 125,000 years and modeled diversity and body size distributions for the next 200 years. The study also found that in 65 million years, climate changes didn’t lead to more extinctions. “We suspect that in the past, shifts in climate led to adaptation and movement of animals, not extinction,” said co-author Jonathan Payne of Stanford University . “Of course, today ongoing climate change may result in extinction since most megafauna are limited in how far they can move.” Smith said we’re really just starting to appreciate megafauna’s crucial roles in ecosystems. “For example, as they walk, their massive size compacts the soil, which can lead to changes in gas exchange or water tables. … We are not entirely sure what the potential loss of these ‘ecosystem engineers’ could lead to,” he said. “I hope we never find out.” The journal Science published the research this month. Scientists from the University of California, San Diego and University of Nebraska-Lincoln also contributed. + University of New Mexico + Science Via The Guardian Images via Michael Pujals on Unsplash and the University of New Mexico

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Cows could one day be the largest land mammals left because of human activity

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