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b'Collaborative consumption is an idea that\'s gained some popularity recently with the publishing of the book "What\'s Mine is Yours" and the rise of car sharing services like Zipcar and Car2Go. It\'s a phenomenon that makes a lot of sense - why own something that sits unused for the majority of its working life when you can pay for it when you need to use it. \\nThis week on CKUA\'s Green Energy Futures we head to Calgary where citizens have embraced the idea of car sharing. Learn how it works and how this idea helps cities and saves energy this week on Green Energy Futures.'