Microplastics are in our water, air and seafood. It's been recently discovered to be in chewing gum, too. Here's what to know ...

The Colorado River and Rio Grande — two significant transboundary rivers at the US-Mexico border — are experiencing historic ...

Tres Xemeneies was once considered a stain on Barcelona’s coastline. Soon it will become the city’s center of innovation.

Two-thirds of the Panama Canal watershed’s freshwater goes to operate the locks. The country plans to build another reservoir ...