The number of "significant" natural catastrophes in North America causing more than $1 billion in losses of more than 50 deaths, 1950-2012: Number of natural catastrophes in North America, 1980-2011: For the climate change skeptics in the audience, these charts come not the Ecology Action Centre, the Natural Resources Defence Council, or the Pembina Institute, but from Munich Re, a $265-billion company that is one of the world's leading reinsurance brokers. (A reinsurer is an outfit that re-sells insurance liabilities when the risk becomes too great for a single retail firm, so it is on the front lines when catastrophic events loom.) Bear...