Melbourne, Australia, cut its water use by half during its worst-ever drought without rate hikes.

Honors go to a Ph.D. candidate at UC San Diego and UC Riverside students operating a free health clinic.

We are a land-rich but water-limited state, and increased supply leads to more demand.

The answer is devastating news for Earth’s largest animals.

If trajectory does not change, soil erosion, combined with effects of climate change, will present huge risk to global food security over next century, soil scientists at UC Berkeley and UC Merced warn.

Efforts to predict the emergence and spread of sudden oak death, an infectious disease that kills oaks and other trees, have gotten a big boost from the work of grassroots volunteers.

Seth Riley, who teaches at UCLA and works for the National Park Service, has tracked 40 mountain lions living in the Santa Monica Mountains.

The former vice president speaks passionately about our political system, the environment and the future of humankind.

UC San Diego biology and chemistry students produce the world’s first algae-based, sustainable surfboard.

Researchers forge strategies to accurately estimate snowpack, soil moisture and surface-water volumes, and improve monitoring of groundwater.

Water clarity in 2014 at the lake was the best in more than a decade.

Ten percent of San Joaquin Valley's ozone pollution comes from outside California, particularly from Asia.