Hockey! Can't get more Canadian than that, eh? RinkWatch is a citizen science initiative to monitor climate change. You sign up, and keep a journal of your backyard rink activity. The tabulated results allow researchers to monitor climate change.
It even makes sense to join if you are a sceptic of global warming: here, at last, is your chance to get involved and prove that GW is a big hoax cooked up by professors of earth science to make "trillions" off the carbon credit exchange market..
RinkWatch: How backyard skaters are monitoring climate change | MNN - Mother Nature Network