Courier-Journal: John Paul Holdren, senior adviser to President Obama on science and technology, took a star turn Tuesday when he released the administration's third U.S. National Climate Assessment.
The document is "the most comprehensive and authoritative ever about how climate has been changing in the United States," said Holdren. It "confirms that climate change is not a distant threat," he added. "It is affecting the American people already."
But wait, said the White House science czar. President Obama...