Colorful pigments may have helped cactus relatives tolerate drought before succulence became a major survival strategy.

Add Yahoo as a preferred source to see more of our stories on Google. As you journey through these desert landscapes, you'll see why cacti have become such powerful symbols of endurance and survival, ...

Is prickly pear cactus, also known as a witch magic hangover cure, the next cheap, drought-friendly biofuel? There are major issues with using food crops like corn and sugarcane for biofuels, ...

The words "wildlife trafficking" might evoke images of elephant ivory, rhino horn or lion claws. But perhaps less is known about the spike in demand for — and the illegal trade of — a well-known ...

In Arizona, even resilient cacti are falling over and dying thanks to the blistering heat that has taken hold of the state for the better part of the last month. Reuters reported on Tuesday that the ...