The Southwest's Famous Cacti Are in Trouble

Younger Cacti Are Less Resilient

A flowering saguaro cactus. Photo: Hal Beral / VWPics (AP)

“The older they are, the more resilient they become to deeper and deeper droughts, right?” Swann told PBS. “So they’re very resilient when they’re 60 years old, but they’re not very resilient when they’re 5 years old.”

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