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An innovative collaboration between scientists is discovering how, 700 years ago, a mysterious, prehistoric culture overcame its landscape’s harsh constraints. The findings may tell a cautionary tale for today’s Southwest.
Yellowstone’s rebounding grizzly bear population is an undeniable success. But figuring out how to manage the threatened omnivores—in light of potential food shortages and deadly human-grizzly interactions—isn’t so easy.
Fifteen years ago the yellow-eared parrot was presumed extinct. Its rediscovery in Colombia forced the Catholic Church to abandon an age-old tradition, and brought about one of the most amazing comebacks in the Americas.
With rising gas prices and global temperatures, corn-based ethanol seemed to promise a bright energy future. Now, as corn's dark side becomes ever clearer, switchgrass offers a better alternative as well as a first step to restoring the prairie that on