A recent National Geographic television channel program helped me understand the physics behind the increased number of violent storms--hurricanes, floods, tornadoes. An increase in the earth's temperature causes greater evaporation and more water vapor in the atmosphere. This moisture has to go somewhere, and that is back to earth. Also the increased water vapor absorbs more of the sun's energy and this energy contributes to storms.
Now, for public policy-- It is past time we got serious about our activities contributing to greenhouse gases, etc. particularly coal-fired power plants. The key to utilizing wind and solar energy is a national power grid to carry the electricity from the sunny and windy places to our major cities.