It was widely believed that cyanobacteria wasn't in lakes far north in Saskatchewan because the water was too cold, but a Grade 11 student at the Clearwater River Dene School is disproving those theories. Ava Haynes' research on cyanobacteria — also known as blue-green algae — in lakes near her home community in northwestern Saskatchewan earned her a Bronze Excellence Award at the Canada-Wide Science Fair in Edmonton last month.