"President Obama, writing in the nation's leading science journal, declared that 'the trend toward clean energy is irreversible' regardless of the different policy choices likely to come from his successor."

"Tilikum, the most famous killer whale in the United States, died Friday after a year-long illness and quarter century of performances streaked with violence."

"The Federal Bureau of Investigation has arrested a Volkswagen executive who faces charges of conspiracy to defraud the United States, two people with knowledge of the arrest said on Sunday, marking an escalation of the criminal investigation into the automaker’s diesel emissions cheating scandal."

"New limits for beryllium will save lives and curb illness among foundry workers and those employed in smelting, fabricating and other industries who may be exposed to the cancer-causing metal, OSHA said in a final rule issued Jan. 6."

"Americans have had one primary reason for building dams over the past century: capturing water for growth, whether on farms or in cities. Now a new dam proposed on California’s Bear River offers another reason: adapting to climate change."

"A vast iceberg, expected to be one of the biggest ever recorded with an area almost the size of the U.S. state of Delaware or the Caribbean island state of Trinidad and Tobago, is poised to break off Antarctica."

"The Indian Point nuclear plant will shut down by April 2021 under an agreement New York State reached this week with Entergy, the utility company that owns the facility in Westchester County, according to a person with direct knowledge of the deal."