In the early years of the 20th century, they still thrived within the Southwest's arid landscapes: As many as 1,000 tortoises per square mile once inhabited the Mojave. But by the end of last century, ...

Mojave Max, the mascot of the Clark County Desert Conservation Program and Nevada’s own iteration of Punxsutawney Phil, has broken his 23-year brumation record. Every year, Clark County School ...