The nation's entire electrical grid depends on about 2,100 high-voltage transformers spread throughout the country. Recently, engineers and homeland security officials held a drill to practice replacing one or more if some are knocked out.

"The electric grid, which keeps beer cold, houses warm, and city traffic from turning to chaos, depends on about 2,100 high-voltage transformers spread throughout the country.

"About 3.7 million Americans live within a few feet of high tide and risk being hit by more frequent coastal flooding in coming decades because of the sea level rise caused by global warming, according to new research."

"In the middle of Sunshine Week, when news organizations and advocacy groups promote government transparency, the Obama administration urged Congress on Tuesday to keep secret a whole new category of information even under the Freedom of Information Act."

"Map used to define Nebraska Sandhills doesn't include nearby areas also vulnerable to contamination, InsideClimate News has learned."

"During the five-month period between October and February, there were 86 reported attacks on computer systems in the United States that control critical infrastructure, factories and databases, according to the Department of Homeland Security, compared with 11 over the same period a year ago."

"Ten years into a campaign to make radioactive materials harder for terrorists to steal, Congressional auditors have found one hospital where cesium was kept in a padlocked room but the combination to the lock was written on the door frame and another where radioactive material was in a room with unsecured windows that looked out on a loading dock."

"BP’s refining subsidiary was released [Monday] from criminal probation related to a 2005 explosion in Texas City that killed 15 workers."

"The U.S. Environmental Protection Agency today added nine new hazardous waste sites to the National Priorities List of Superfund sites, and is proposing to include 10 additional sites."

"The Energy Department is mismanaging oversight of $34 billion in taxpayer-backed loans for green-energy and other projects, congressional auditors said Monday in a new report."

"The Government Accountability Office said it took Energy Department staff more than three months to come up with data on the status of applications for loan guarantees, leading auditors to question whether oversight of the program is timely or fair to companies seeking federal subsidies.

"The Senate on Tuesday resoundingly rejected a sweeping measure to open the Arctic National Wildlife Refuge and other protected areas to oil drilling, as well as to approve construction of the Keystone pipeline project."