Smoke Gets in Your Eyes

A curious sight has appeared recently in the stark desert lanscape near Piedras Negras, Mexico: the towering smokestacks of a mammoth coal-burning plant called Carbon II. When finished, Carbon II will supply a big dose of Mexico’s growing power needs and hundreds of jobs. But it will also create an unwelcome export: sulfur dioxide emissions, vastly exceeding U.S. standards, that will drift north of the border.