In this arid river valley in southeastern Alberta, Adam Martinson is trying to find out why rattlesnakes cross the road.
Martinson, a University of Calgary student working on a Masters degree has come to Dinosaur Provincial Park, listed as a United Nations World Heritage site, to study why snakes slither onto -- and too frequently die on -- the asphalt blacktop of the region's roads.
"Road mortality is a significant factor of influencing snake populations around the world," Martinson said. "In southern Alberta it's particularly important because the snakes aren't moving very fast across the roads and there is a huge amount of development."
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