A Texas hiker who stumbles on a once-in-a-lifetime rare cactus in the desert is not just finding a botanical curiosity, but ...

It's found in the U.S. exclusively in the Big Bend region of West Texas.

A rare tree cactus that grew for decades hidden by a tangle of mangrove trees on Florida's Key Largo has lost its battle with rising sea levels and other pressures. It's now considered locally extinct ...

As out-of-control heat cooks our planet, shattering temperature records for the last 13 consecutive months, it melts polar ice and raises sea levels. Most people are familiar with how this works, but ...

The Karoo desert is a biodiversity hotspot spanning South Africa and Namibia, and contains many rare succulent plants. This endangered flora is being poached to meet international demand. The illegal ...

The Colorado hookless cactus has far more specimens in the wild, and a better drought survival record, than previously thought It took two years from proposal to acceptance. But apparently the ...

cactus has been mutilated in a wilderness area northeast of Phoenix. A permitted outfitter guide notified forest officials Thursday about the cactus, which had its renowned crested top cut off. Forest ...