PHOENIX — Arizona is heading into the new year with major uncertainty over its water future. There is still no agreement on how the Colorado River will be shared after 2026, as the current operating ...

A new report compiled by the University of Colorado's Colorado River Research Group warns that threats to the river's water supply are now so severe that they pose a significant risk to the water ...

For the first time in 86 years, the lower Yakima River is flowing freely through a section of the causeway at Bateman Island near Richland. The removal of the causeway marks a significant step in ...

Scientists used satellite data to confirm that Earth's crust is "dripping" into the mantle beneath Turkey's Central Anatolian ...