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10 green athletes going for gold in London

Arielle Martin, Olympics

Photo: Courtesy of Mitchell Haaseth, NBC Olympics

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Arielle Martin, BMX cycling

Arielle Martin is committed to eco-friendly living, telling us that she “buys eco-friendly whenever possible.” An alternate in BMX Cycling in the 2008 Beijing Games, Martin is set to make her Olympic debut in London. In 2011, she became the first American woman to win a BMX Supercross World Cup.