Students from 17 universities recently competed in the Third Annual Clean Snowmobile Challenge in Jackson Hole, Wyoming. The event challenges students to design snowmobiles that cut emissions and noise while improving performance. A Colorado State University team designed a snowmobile that reduces pollution more than 99%, boosts fuel efficiency by 36% and cuts noise to conversational levels. The engine design has the potential to lessen the environmental impact of snowmobiling and cut ...

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