Daniel Turp presented a motion in Federal Court today to contest the Conservative government's decision to ditch the world's only binding climate treaty.
Turp's group, which includes university students and environmentalists, is asking the court to determine whether the Kyoto withdrawal violates Canada's international commitments.
The professor of international law argues Canada signed the protocol as a country and that it cannot back out based on just a simple decision by the Harper government.
Turp also says the Tories' decision to withdraw from Kyoto violates democratic principles.
Environment Minister Peter Kent announced last month that Canada was pulling out of Kyoto, making it the first country to abandon the climate treaty.
Turp's group has hired prominent human-rights lawyer Julius Grey to plead its case.
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