EnergyWire: When Sen. Sheldon Whitehouse started his 95th Senate floor speech on global warming, the discerning cable viewer witnessed a shift from his bully pulpit admonition that often begins, "We are sleepwalking our way to a climate catastrophe."
"Mr. President," he said, standing over a small dais in the back of the chamber in April, "the distinguished majority leader, the senior senator from Kentucky, is resolutely opposed to any serious conversation about climate change."
Four months into Sen. Mitch...