SPECIES SAFE EVEN IF WORLD WARMS, BY: DENNIS T. AVERY
Biologists are again predicting massive species losses as the world warms. But where are the corpses? There have been few findings of extinctions among continental bird and mammal species over the past 500 years. The species extinctions have been virtually all on islands, as humans have brought such alien predators as rats, cats, and Canadian thistles to places where they had no natural enemies.


