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      Winds of Change Blow Renewable Energy Across Latin America [Slide Show]

      DESERT BLOOM

      Other wind projects are under consideration, including a 200-megawatt wind farm in the peninsula's Ipapure region and a 20-megawatt site at Joutkai, which would be close enough to Jepírachi to share the same substation...
      Air Power: The Making of a Modern Wind Turbine and Wind Farm [Slide Show]

      NACELLE

      The box atop a wind turbine's tower, set back from the blades and rotor, is known as a nacelle. This is essentially the cover for the machinery that translates wind power into electrical power, including the gearbox and generator...
      Air Power: The Making of a Modern Wind Turbine and Wind Farm [Slide Show]

      TOWER OF POWER

      A modern wind turbine towers 90 meters in the air and can sport three blades, each longer than a football field. When incoming wind blows across both faces of a blade, the unique shape causes a difference in air pressure between the faces...
      Discoveries 2010: An Exhibition of Energy Sources from Past to Future

      Energy from the High Seas

      Offshore wind farm technology, which is still relatively young, has a number of benefits: It is widely accepted as a renewable energy source, and it relies on offshore winds over the open sea—which are considerably stronger and more reliable than those over land...
      Air Power: The Making of a Modern Wind Turbine and Wind Farm [Slide Show]

      HURLING ICE

      Although electricity from wind turbines can cut down on carbon dioxide emissions and other pollution, some people have found flaws—their noise (a constant hum when the wind blows), their propensity to kill birds or bats when improperly sited, and their ability to fling chunks of ice, as pictured here...
      Air Power: The Making of a Modern Wind Turbine and Wind Farm [Slide Show]

      GRID CONNECTION

      Each individual turbine generator is connected to a local grid that then feeds into the broader regional grid, which relays the electricity to consumers. One of the challenges of wind power is that the wind often blows best far away from where the most electricity is used—in densely populated metropolitan areas such as New York City and Los Angeles...
      Discoveries 2010: An Exhibition of Energy Sources from Past to Future

      Power Savers

      In a future in which societies depend more on wind and solar power, improved battery technology that stores regenerated power as chemical energy could deliver sustainable electricity when the wind is calm or sunlight is unavailable...
      Winds of Change Blow Renewable Energy Across Latin America [Slide Show]

      CULTURE SHOCK

      Jepírachi is the country's first utility-scale wind turbine field connected to the national grid and Latin America's first megawatt-size wind power installation. It was built in a desert where most inhabitants have only sporadic access to electricity...
      August 4, 2008Environment

      China's Big Push for Renewable Energy

      China is now the world's workshop for wind and solar power. But can they reach their own ambitious goals for renewable energy?
      September 1, 1975Space & Physics

      Interplanetary Particles and Fields

      A "wind" of charged particles blows out from the sun, punctuated by energetic bursts. These particles interact with the magnetic fields of the planets in intricate ways
      July 1, 1987The Sciences

      Aerodynamics of Wind Pollination

      Many plants are almost perfectly engineered to capture pollen from the wind. Cones, flower clusters and other structures channel the airflow-and sperm-producing pollen-toward reproductive surfaces...
      March 10, 2008Environment

      It Came From the Sea--Renewable Energy, That Is

      Companies and governments are counting on underwater turbines, submerged "wind" farms, and wave-riding electrical generators to use ocean turbulence to keep the lights on
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