"An agreement amending the longstanding treaty between the U.S. and Mexico on management of the Colorado River will continue the practice of water shortage sharing, but also fund new conservation and environmental programs, and aim to reduce the risk of ruinous drought."

"The death toll from the powerful earthquake that struck Mexico on Tuesday jumped to 217, government officials said Wednesday, as searchers worked desperately to find survivors in the ruins of collapsed structures."

"The U.S. and Mexican governments may be sharply at odds on President Donald Trump's plan for a border wall, but when it comes to water – and the potential for a major shortage along the Colorado River – the two sides seem to be on the same page."

"Discharges of sewage, trash, and toxic sludge from Mexico have one California border city threatening to sue a binational agency charged with managing water pollution along the U.S.-Mexico border."

President Trump's efforts to upend the trade treaty known as NAFTA could jeopardize the U.S.-Mexico trade in natural gas -- on which the U.S. energy industry depends.

"The Mexican government, tycoon Carlos Slim and U.S. actor Leonardo DiCaprio on Wednesday unveiled a joint plan to protect a tiny porpoise in the Gulf of California that has become a potent symbol of critically endangered animal species."

"Mexico's government has enlisted the help of three trained dolphins to locate in the wild their less fortunate cousin, the rare vaquita porpoise, in an effort to bring back from the brink of extinction a species with fewer than 40 specimens left."

"As the White House pushes Congress to fund President Trump's U.S.-Mexico border wall, a new wrinkle has emerged that could stymie parts of the massive project. Mexican engineers believe construction of the border barrier may violate a 47-year-old treaty governing the shared waters of the Rio Grande. If Mexico protests, the fate of the wall could end up in an international court."

"A gang of dozens of fishermen overturned inspectors' trucks, burned or destroyed 15 vehicles and patrol boats, and beat three inspectors from the office for environmental protection in a town on Mexico's Gulf of California."