Despite their enormous ecological values, new research reveals we don’t understand how most arachnid species are faring right now — or do much to protect them.

A nearly extinct population of this wide-ranging species represents a unique element of biodiversity in the Caucasus.

A new report puts into focus for the first time the scope of the state’s drinking-water problems and what it will take to fix them. 

The pressures of climate change and human land use could lead to the disappearance of unique biodiversity and vital ecological services.

Planting trees is not a silver bullet. It’s time to change the narrative from tree-planting to tree-growing.

We’ve made a lot of strides in whale conservation, but climate change, plastic pollution and other dangers have emerged.

A new book reveals the harrowing attempts made to save imperiled plants and wildlife from Australia’s massive wildfires last year, including a daring scheme to protect ancient Wollemi pines.

To slow climate change, we’ll need to not just cut emissions, but sequester them. And for that we’ll need to protect healthy ecosystems, experts say.

Invasive predators have cornered these endangered Patagonian frogs in the last remnant of their habitat.