SAN FRANCISCO— A judge has rejected federal agencies’ approval of activities in the California Desert Conservation Area, including a vast network of off-road vehicle routes in the West Mojave Desert.

Now that we're in the month of May and have seen temperatures consistently in the upper 80s—many locals are asking "where is ...

Desert tortoises have lived in the deserts of California, Arizona, Nevada and Utah since the Pleistocene. In the early years of the 20th century, they still thrived within the Southwest's arid ...

Luckily, two slumbering desert tortoises survived ... Estralla said the arrival of two senior tortoises into her home has been a bit of a practice run for her baby’s arrival.

First Solar has found similar habitat gains in California. Desert tortoises are roaming a 15 MW community solar farm owned by the Valley Electric Association in Nevada thanks to fence openings ...