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"Kathryn Sullivan has helped U.S. Navy sailors navigate — literally — through rough seas as an oceanographer in the Navy Reserves. As a NASA astronaut, she’s walked in space, the first American woman to step outside a spacecraft, 140 miles above Earth. These challenges are a world apart from what she’s now confronting in Washington as she leads an agency of federal scientists in the crosshairs of a powerful member of Congress."

"A deal on limiting carbon dioxide emissions from aviation will likely be reached next year, no matter the outcome of this week's climate change talks in Paris, a senior official from the International Air Transport Association (IATA) said on Thursday."

"The U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) finalized a new rule Monday that will require all producers of raw ground beef to keep records of where the meat has come from."

U.S. diplomats spent much effort, time, and political capital engineering a Paris climate agreement that could not be derailed by Congressional Republicans.

"Jim Delmore came to the lab he ran at the Idaho National Laboratory on Nov. 13, 1972, to find it roped off from entry because of a plutonium contamination."

"The man leading the daunting task of dealing with the Fukushima nuclear plant that sank into meltdowns in northeastern Japan warns with surprising candor: Nothing can be promised."

"As temperatures climb, so, too, will sea levels."