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Going the farthest distance might sound like a foot race. But this past weekend, it meant stretching the boundaries of fuel efficiency as student teams competed in the fifth annual Shell Eco-marathon Americas, a challenge for students to design, build and test fuel-efficient vehicles that travel the farthest distance using the least amount of energy. High school and university students from Canada and the United States competed in the two-day street course challenge in downtown Houston.

Melting glaciers and ice caps on Canadian Arctic islands play a much greater role in sea level rise than scientists previously thought, according to a new study led by a University of Michigan researcher.