The Climate Spark Climate Solutions Challenge is looking for the best business ideas for making greenhouse gas emission reductions profitable.  The online challenge being run by the Toronto Atmospheric Fund uses a web 2.0 crowdsourcing and virtual brainstorming approach that helps spotlight ideas that can drive profits up while driving emissions down.  This is a chance to be seen and heard by a community of investors, entrepreneurs, innovators and professionals from across Canada and to get your business idea in front of investors with $15 million in capital earmarked for green ventures.  The best business proposal gets $10,000 cash, and there are great prizes for participating in the commenting and voting. Check it out at www.climatespark.ca.