Drought makes life hard for Los Angeles newts

David Colgan

In the southern part of the state, the California newt—Taricha torosa—has been showing up at breeding grounds nearly 20 percent underweight, on average. The drastic change has evolutionary biologist Gary Bucciarelli concerned. “They look really emaciated,” said Bucciarelli, a postdoctoral researcher with UCLA Institute of the Environment and Sustainability. “You can see the vertebrae and…



Are we leaving nature behind?

Peter Kareiva

The crisis is taught in classrooms with phrases such as “species are being lost at one hundred times the background rate.” But concepts like background rate—the rate at which species were lost prior to humans—are not easily visualized. Pictures of recently extinct species might prompt a sense of loss, but that raises questions: What photographs…