"It’s an arcane system of water law that dates back to the birth of California — an era when 49ers used sluice boxes and water cannons to scour gold from Sierra Nevada foothills and when the state government promoted the extermination of Native people to make way for white settlers."

"Visible from space, an explosion of harmful seaweed now stretches like a sea monster across the ocean. Could robots save us from it – and store carbon in the process?"

"Vast releases of gas, along with future ‘methane bombs’, represent huge threat – but curbing emissions would rapidly reduce global heating".

"Federal investigators are opening a wide-ranging investigation into one of the nation’s biggest railroads following a fiery derailment on the Ohio-Pennsylvania border last month and several other accidents involving Norfolk Southern, including the death of a train conductor Tuesday."

"A warming climate has left a fifth of the conifer forests that blanket California's Sierra Nevada stranded in habitats that no longer suit them, according to a study published last week by researchers at Stanford University."

"Norfolk Southern Railway will pay for temporary relocation for people who live within a mile of the site of a train derailment that spilled hazardous chemicals, amid ongoing cleanup efforts."

"A top oil executive from the United Arab Emirates on Monday urged the energy industry to join the fight against climate change, borrowing a famous line from a U.S. astronaut aboard a damaged spacecraft during the Apollo 13 mission in 1970."

"Environmental groups and a Native American tribe accused the operator of a Maine dam on Monday of not fulfilling its obligation to protect the country’s last remaining Atlantic salmon river run."