Tulsa World: A new climate change report warns of more extreme weather marked by heat waves, droughts and heavy rainfall for Oklahoma and other Great Plains states. U.S. Sen. Jim Inhofe, R-Okla., who once referred to global warming as a hoax, dismissed the latest report Wednesday as a “phony” effort to shore up support for legislation. Released by the Obama administration, the report states that climate change already is having visible impacts on the U.S. “It tells us why remedial …