Devastating floods in the midwest; a catastrophic tornado in Texas; paralyzing snow-falls in the Dakotas. These are only a few of the recent weather disasters we've seen this past year. And now scientists are telling us to get ready for another spate of powerful and costly hurricanes. Climate researchers say these weather extremes are becoming more common; and that they may be caused by human induced global climate change. Insurance firms, which pick up the tab for storm damage are taking notice, as Frank Koller of the Canadian Broadcasting Corporation reports.