South America's "lithium triangle" - in Chile, Argentina and Bolivia - has the world's largest trove of the metal. Rio Tinto will contribute up to $900 million in the deal to extract lithium from ...

This article is part of Running Out, an occasional series about Texas’ water crisis. MISSION — More than 100 years ago, developers lured farmers to the Rio Grande Valley by marketing the ...

An aerial view of the Tres Lagos neighborhood in McAllen on May 12. Developed by Rhodes Enterprises, the community includes thousands of homes, restaurants and the McAllen campus of Texas A&M.