"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."

"LOS ALGODONES, Mexico — Osvel Hinojosa knew that an infusion of water would bring the Colorado River delta back to life. But in just a few days, a U.S.-Mexican experiment to revive the delta environment has exceeded his expectations."

"WASHINGTON -- A report due to be released Tuesday aims to offer an object lesson to President Barack Obama: Free trade deals have high costs in unintended consequences for the environment, people's way of life, and local sovereignty."

"Canadian Prime Minister Stephen Harper’s frustration with U.S. President Barack Obama’s failure to approve the Keystone XL pipeline may make this installment of the North America summit, known as the “Three Amigos,” the frostiest since the annual meetings began almost a decade ago."

"MEXICO CITY -- The annual migration to Mexico of millions of orange-and-black monarch butterflies is one of the nation's cherished rituals. But it could come to a virtual halt if the insect's natural habitat is not urgently salvaged."