While walking in Big Bend National Park in Texas' Chihuahuan Desert, a park volunteer came across a fuzzy flower that turned out to be a never-before-seen species. The "woolly devil," as ...

Many of us encourage milkweed to grow in our yards because it’s a host plant for monarch butterflies. When caterpillars eat milkweed, its toxins shield them against predators. But in humans and ...

LAS VEGAS— The Center for Biological Diversity today petitioned the U.S. Fish and Wildlife Service to protect a rare desert wildflower under the Endangered Species Act. The white-margined penstemon ...