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Wanted: ‘Citizen scientists’ to help count Joshua trees

By HENRY BREAN - Associated Press

Field assistant Candace Fallon introduces Yucca moths to blooms on Joshua trees in the Mojave Desert during research on April 7, 2011. A century from now, the Mojave Desert's iconic plant could be pushing its way into new territory or teetering on the brink of extinction. This spring, a pair of researchers will go looking for clues to the Joshua tree's fate in a lonesome valley 140 miles north of Las Vegas. (AP Photo/Las Vegas Review-Journal, Jessica Ebelhar)

Iconic Joshua trees in race against extinction

By HENRY BREAN - Associated Press