LiveScience: An emphatic five words spoken by President Obama on Tuesday during the State of the Union (SOTU) address were bittersweet for some climate scientists.
"Climate change is a fact," Obama said.
Scientists have known human-caused climate change is real, and while Obama has never said anything to the contrary, his declarative acknowledgment of the phenomenon is important.
"I applauded," after the remark, said Kevin Trenberth, a climate scientist at the independent National Center for Atmospheric...