Want to help our national parks get even better? Here's how you can volunteer to keep them clean and take part in some ...

Recycling robots are using artificial intelligence to learn how to sort recyclables by recognizing patterns in colors, textures, shapes and logos.

An empty field along the Buffalo Speedway in southwest Houston has become a "hot spot" for illegally dumped trash, frustrating city leaders. Mayor Pro Tem Martha Castex-Tatum, who represents District ...