I have filed numerous columns on global warming and weather changes,
from tree frogs, with skin affected by too much sunlight, to depleted
ice sheets in Greenland. Some scientists insist carbon dioxide is
speeding the warming process, while climatologists contend it is
cyclical. On Thursday, “ABC World News Tonight” reported just four
years ago half the nation was running dry. A recent survey shows 92
percent of the  U.S. is drought free, representing the most dramatic
turnaround on record. Georgia’s Lake Lanier in 2007 was bone dry; folks
were walking on the bottom. Today, the lake may be too full as the U.S.
Army Corps of Engineers is monitoring its levels. Lake Travis was empty
in 2004; today it’s at bank-full.