Calgary Herald: In a world obsessed with global warming and climate change, the rhetoric rose to a fever pitch with Al Gore’s movie, An Inconvenient Truth, claiming that Manhattan Island would be under water if the ice on the poles melted. He claims the oceans would rise by seven metres, flooding coastal countries. Canadian climate studies in 2008 stated the ocean might rise up to half a metre. Media embrace disaster. The reason for alarm was blamed on the millions of tonnes of carbon dioxide gas …