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    A backpacker walks along a freshwater stream to the Pacific Ocean. — Stock Photo
    A backpacker walks along a freshwater stream to the Pacific Ocean.
    Man seated at a computer — Stock Photo
    Man seated at a computer
    Person using a laptop computer — Stock Photo
    Person using a laptop computer
    Architects discussing green construction project on computer monitor in office. — Stock Photo
    Architects discussing green construction project on computer monitor in office.
    Engineers with blueprints talking at sunny power plant — Stock Photo
    Engineers with blueprints talking at sunny power plant
    Large metal wind turbines on rolling hills with blue sky, North of Waterton; Alberta, Canada — Stock Photo
    Large metal wind turbines on rolling hills with blue sky, North of Waterton; Alberta, Canada
    Wind turbines with maintenance access road; Campillos, Malaga, Andalucia, Spain — Stock Photo
    Wind turbines with maintenance access road; Campillos, Malaga, Andalucia, Spain
    Stored organic waste — Stock Photo
    Stored organic waste
    Couple walking between trees. — Stock Photo
    Couple walking between trees.
    Stack of recycled white paper — Stock Photo
    Stack of recycled white paper
    Engineers meeting at truck at sunny wind turbine power plant — Stock Photo
    Engineers meeting at truck at sunny wind turbine power plant
    Two large metal windmills in a soybean field with blue sky and clouds, West of Port Colborne; Ontario, Canada — Stock Photo
    Two large metal windmills in a soybean field with blue sky and clouds, West of Port Colborne; Ontario, Canada
    Wind turbines on a hilly landscape on a wind farm; Washington, United States of America — Stock Photo
    Wind turbines on a hilly landscape on a wind farm; Washington, United States of America
    Wind turbines on a vast field of farmland under a cloudy sky; Saskatchewan, Canada — Stock Photo
    Wind turbines on a vast field of farmland under a cloudy sky; Saskatchewan, Canada
    One of the detectors of the Pierre Auger observatory is seen close up with the Andes in the distance. The solar panel and antenna are clearly visible; Malargue, Mendoza, Argentina — Stock Photo
    One of the detectors of the Pierre Auger observatory is seen close up with the Andes in the distance. The solar panel and antenna are clearly visible; Malargue, Mendoza, Argentina
    Rocky landscape in morning in Mines of Riotinto, Huelva — Stock Photo
    Rocky landscape in morning in Mines of Riotinto, Huelva
    Portrait smiling, confident female engineer at sunny power plant — Stock Photo
    Portrait smiling, confident female engineer at sunny power plant
    Young female overlooking lake tahoe at sunset — Stock Photo
    Young female overlooking lake tahoe at sunset
    Young woman standing in a wheat field — Stock Photo
    Young woman standing in a wheat field
    Man in business suit astride bicycle with helmet in city. — Stock Photo
    Man in business suit astride bicycle with helmet in city.
    Man in suit using smart phone — Stock Photo
    Man in suit using smart phone
    Man loading a lorry with pine trees — Stock Photo
    Man loading a lorry with pine trees
    Side view of woman planting in garden on a sunny day — Stock Photo
    Side view of woman planting in garden on a sunny day
    Wind turbines on a vast field of farmland under a cloudy sky; Saskatchewan, Canada — Stock Photo
    Wind turbines on a vast field of farmland under a cloudy sky; Saskatchewan, Canada
    Portrait confident, smiling engineers at power plant — Stock Photo
    Portrait confident, smiling engineers at power plant
    Rocky landscape in early morning in Mines of Riotinto, Huelva — Stock Photo
    Rocky landscape in early morning in Mines of Riotinto, Huelva
    Young man in workshop — Stock Photo
    Young man in workshop
    Young man in workshop — Stock Photo
    Young man in workshop
    Architects discussing green construction project on computer monitor in office. — Stock Photo
    Architects discussing green construction project on computer monitor in office.
    View of Salto De La Encantada — Stock Photo
    View of Salto De La Encantada
    Female engineer with digital tablet talking to colleague at wind turbine power plant — Stock Photo
    Female engineer with digital tablet talking to colleague at wind turbine power plant
    Rocky landscape in morning in Mines of Riotinto, Huelva — Stock Photo
    Rocky landscape in morning in Mines of Riotinto, Huelva
    Young woman with arms folded leaning against tree in country. — Stock Photo
    Young woman with arms folded leaning against tree in country.
    Wheelbarrow in a garden by a vegetable patch, France — Stock Photo
    Wheelbarrow in a garden by a vegetable patch, France
    Boy at Green Science Fair sign — Stock Photo
    Boy at Green Science Fair sign
    Portrait confident, smiling engineers at sunny solar power plant — Stock Photo
    Portrait confident, smiling engineers at sunny solar power plant
    Man carrying large plank of wood — Stock Photo
    Man carrying large plank of wood
    Man in cap crouching and examining handful of soil in park with rows of trees. — Stock Photo
    Man in cap crouching and examining handful of soil in park with rows of trees.
    Engineers reviewing blueprints on truck at sunny wind turbine power plant — Stock Photo
    Engineers reviewing blueprints on truck at sunny wind turbine power plant
    Kids Playing at the Beach — Stock Photo
    Kids Playing at the Beach
    Old wooden windmill on top of structure with blue sky; Leiden, Netherlands — Stock Photo
    Old wooden windmill on top of structure with blue sky; Leiden, Netherlands
    High angle view of modern solar panels in mountains, Tibet — Stock Photo
    High angle view of modern solar panels in mountains, Tibet
    Baby boy in a diaper crying. — Stock Photo
    Baby boy in a diaper crying.
    Farmer standing in a wheat field — Stock Photo
    Farmer standing in a wheat field
    Mount Nuptse Everest Himalaya Nepal — Stock Photo
    Mount Nuptse Everest Himalaya Nepal
    Man carrying a solar panel — Stock Photo
    Man carrying a solar panel