"Mexico's environment secretary said on Tuesday that Grupo Mexico gave false information about a toxic spill at its Buenavista mine in northern Mexico, a day after the environmental authority said it would file a criminal complaint against the company."

"A civil defense official says that about 10 million gallons of mining acid leaked into a river that supplies water to tens of thousands of people."

"MEXICO CITY — Mexico’s Congress approved on Tuesday a sweeping overhaul of the energy industry that cleared the way for international giants to tap Mexico’s rich reserves of oil and gas."

"California Governor Jerry Brown and Mexican environmental officials signed a pact on Monday aimed at reducing greenhouse gas emissions, an agreement that could eventually expand the market for carbon credits."

"Mexico's Senate gave final approval early on Sunday to a bill that aims to boost competition and lower prices in the electricity sector, part of President Enrique Pena Nieto's landmark energy overhaul approved by Congress last year."

"MEXICO CITY -- Bean grower Manuel Alvarado is part of the majority of producers in Mexico who consider it unnecessary to introduce genetically modified varieties of beans, as the government is promoting."

"MEXICO CITY -- The new legal framework for Mexico’s oil industry has not placed controls on the use of harmful chemicals in the extraction of unconventional fossil fuels, and environmentalists and experts fear their consumption will increase in an industry that is opening up to private capital."

"To grasp the difficulties Mexico faces in capitalizing on a North American shale boom, just wander into the dusty landscape due south of the U.S. border."

"Millions of gallons of water used to flow every day from the Rocky Mountains to the Gulf of California. Now, the Colorado River ends at Morelos Dam on the U.S.-Mexico border. Below it, one of North America's largest wetlands is dry."

"On a high mountain slope in central Mexico, a patch of fir trees looks dusted in orange and black. In fact, millions of monarch butterflies cloak the trees. The forest murmurs with the whir of their flapping wings."