Can We Save Every Species from Extinction?
The Endangered Species Act requires that every U.S. plant and animal be saved from extinction, but after 50 years, we have to do much more to prevent a biodiversity crisis
Stories by Robert Kunzig
Robert Kunzig is a freelance writer in Birmingham, Ala., and a former senior editor at National Geographic, Discover and Scientific American.
Geoengineering: How to Cool Earth--At a Price
Global warming has become such an overriding emergency that some climate experts are willing to consider schemes for partly shielding the planet from the sun's rays. But no such scheme is a magic bullet
Is Focusing on "Hot Spots" the Key to Preserving Biodiversity?
Preserving biodiversity in rich habitats is good. But global warming and other new threats may call for a new strategy
All is Flux
Nothing, including hot spots in the earth's mantle, stays still