#45 in Air & Water Quality. California, the most populous state in the nation, is home to Hollywood's stars, Silicon Valley's technology, Napa Valley's wines and ancient Redwood and Sequoia forests.

The director of ICON Water Trails told KCCI it will not only improve water quality — but also attract more people to Des Moines. "People want these amenities in their own backyard," said Maggie ...

Unfortunately, 207 of our 397 national parks — 52 percent — have waterways that are considered “impaired” under the Clean Water Act, meaning they do not meet appropriate water quality standards. The ...