Groundwater

A combination of water management practices has contributed to notable groundwater gains in Central Arizona despite the region dealing with…

A relatively small amount of groundwater trickling through Alaska's tundra is releasing huge quantities of carbon into the ocean, where…

The sweeping land use changes and irrigation of the U.S. Corn Belt, along with the influence of the area's shallow…

Approximately 71 to 95 million people in the Lower 48 states — more than 20% of the country's population —…