"The United States will submit plans for slowing global warming to the United Nations early this week but most governments will miss an informal March 31 deadline, complicating work on a global climate deal due in December."

"A yearlong investigation by government scientists has concluded that a major accident at a nuclear waste dump was caused by the wrong brand of cat litter."

"Ted Cruz, the junior U.S. senator from Texas and first official contender for the 2016 Republican presidential nomination, compared people who think that the climate is warming to "flat-Earthers" and described himself as a modern-day Galileo in an interview with the Texas Tribune."

"A group of Democratic senators wants to improve the safety of transporting oil by rail in the United States, following a series of high-profile derailments that led to fires and explosions."

"About once every four days, part of the nation's power grid — a system whose failure could leave millions in the dark — is struck by a cyber or physical attack, a USA TODAY analysis of federal energy records finds."

"Nuclear energy is experiencing a renaissance around the world, but lawmakers in the US are struggling with a decades-old waste problem. It's one of the many challenges facing the US industry as competition grows in China and elsewhere."

Preliminary evidence from an annual survey shows that blue crab populations in the Chesapeake Bay are starting to rebound.

"The embattled chairman of the Chemical Safety Board resigned late Thursday after President Obama asked him to step down, a White House official said."

"A new study suggests that the University of Alabama at Huntsville is lowballing the warming of the atmosphere".

"Oil prices rose sharply on Thursday amid concerns that fighting in the Arabian Peninsula between a Saudi-led coalition and Houthi rebels in Yemen could disrupt supplies."