Detailed text transcripts for TV channel - KGO - 20110524:09:44:00
Year. and these are the deadly variety, 50 killer tornados so far this year, more than double the normal 20. >> this year has really been just the perfect year for tornados. >> reporter: climatologist heidi cullen, writes about global warming and says while climate change has increased humidity levels and can be blamed for general increase in weather, science cannot specifically point to climate change for this hyper-deadly tornado season. >> more extreme events like floods, more extreme events like droughts, heatwaves, wildfires. those are phenomenon that we very much expect to see more of as...
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