Students in an eighth-grade engineering class at Pleasantville Middle School constructed roller coasters using marbles, paper, popsicle sticks, tape and their critical-thinking skills. The young ...

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A 19-year-old engineering student has built a working roller-coaster in the backyard of his parents' home in Thornhill, Ont. Shortly after his Grade 10 year, David Chesney began tinkering around with ...