Arizona Governor Katie Hobbs is giving $14 million more to a water agency to fund water conservation projects in Arizona.

A new report says the expansion of nickel mining in Indonesia is a threat to one of Earth's most biodiverse marine regions.

New research shows sea turtles, penguins and whales swim at optimal depths to minimise the energetic cost of travel.

Elon Musk's backpedaling on climate makes clear: we can't depend on billionaires and big corporations. We need grassroots ...