Florida's Crist calls oil drilling special session

Saying he felt a "compelling duty to protect Florida," Gov. Charlie Crist on Thursday said he is calling a special session July 20-23 to consider a constitutional ban on drilling in Florida waters.Crist previously said he supported drilling as long as it was safe enough and far enough away to protect the coast. But he came out against drilling again after the BP oil spill began on April 20.Crist