"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."

"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."

"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 Environmental Protection Agency engaged in 'covert propaganda' and violated federal law when it blitzed social media to urge the public to back an Obama administration rule intended to better protect the nation’s streams and surface waters, congressional auditors have concluded."

"In the U.S., even chicken that has passed all federal food safety requirements still can make people sick."

'Irradiated,' a special report published today by McClatchy, offers an unprecedented look at the costs of war and the risks of a strong defense, using federal records to chronicle the deaths of at least 33,480 nuclear workers who helped the U.S. win World War II and the Cold War."

"Food companies are mounting an aggressive year-end push to head off mandatory labeling of genetically modified foods."

"With their work in the crosshairs of a political ideology, climate scientists find themselves under attack via the Internet."

"Byron Vaigneur watched as a brownish sludge containing plutonium broke through the wall of his office on Oct. 3, 1975, and began puddling four feet from his desk at the Savannah River nuclear weapons plant in South Carolina."