ClimateWire: President George W. Bush is said to have quipped while in office that "I don't do nuance" -- a trait that today's hyperpartisan Washington, D.C., often appears to share. Democrats faced the challenge of communicating scientific nuance head-on this week when a devastating Oklahoma tornado raised the question of how to link climate change to extreme weather events, given the already thorny politics of disaster aid.
The trouble began Monday as a fatal, milewide tornado descended on Moore, Okla.,...