Back in the mid-1800s, the unpredictable course of the Rio Grande shifted southward at El Paso, leaving a 600-acre wedge of flat, sandy Mexican land stranded on the Texas side (see map).

Michael Graham Richard is a writer from Ottawa, Ontario. He worked for Treehugger for 11 years, covering science, technology, and transportation. A recent U.S. Environmental Protection Agency ...

Such underground rivers often connect the open "cenotes," or sinkhole lakes, that dot Mexico's Yucatan peninsula ... He said it may confirm that the Mayas included symbolic maps of their cosmology in ...

Daniel Timmons, wild rivers program director at WildEarth Guardians said New Mexico must now develop its own, state-level water permitting program to protect wetlands and other waters impacted by ...