"Snow, sleet and hail snarled transportation across swaths of the United States on Monday during one of the busiest travel weeks, after dozens died in U.S. storms that were part of a wild worldwide weather system seen over the Christmas holiday period."

"Iranian hackers infiltrated the control system of a small dam less than 20 miles from New York City two years ago, sparking concerns that reached to the White House, according to former and current U.S. officials and experts familiar with the previously undisclosed incident."

"When then-Gov. Robert F. McDonnell (R) first pushed the idea in 2010, it was easy to find Virginians who favored oil and gas drilling along the Virginia coast, even in this tourism-dependent city of 450,000. The Virginia Beach City Council voted 8 to 3 that year in support of the giant offshore rigs, betting, along with the mayor, that 'there’s going to be money made.'"

"SandRidge Energy Inc., the financially troubled oil producer focused on earthquake-prone northern Oklahoma, is defying a state directive to shut down six disposal wells linked to quakes."

"Security researcher Brian Wallace was on the trail of hackers who had snatched a California university's housing files when he stumbled into a larger nightmare: Cyberattackers had opened a pathway into the networks running the United States' power grid."

"As Congress headed home for the Christmas break after passing a budget deal, Agriculture Department Secretary Tom Vilsack presented lawmakers with an angry ultimatum: Put up more cash if you want the U.S. Forest Service to keep putting out huge wildfires."

"A consulting firm that helped write a report underestimating the risks of catastrophic spills from a proposed Vancouver oil train terminal has worked for two groups that will gain financially if the project moves forward."

"Just east of the Homestead-Miami Speedway, off Florida's Biscayne Bay, two nuclear reactors churn out enough electricity to power nearly a million homes. The Turkey Point plant is licensed to continue doing so until at least 2032. At some point after that, if you believe the direst government projections, a good part of the low-lying site could be underwater. So could at least 13 other U.S. nuclear plants, as the world’s seas continue to rise."

"For months, worried parents in Flint, Mich., arrived at their pediatricians’ offices in droves. Holding a toddler by the hand or an infant in their arms, they all have the same question: Are their children being poisoned?"

"Ethiopia's government has increased to 10.1 million the estimated number of people who desperately need food aid because of a drought."