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Rock Iguanas

Cats as Invasive Species? The Less-Known Facts About Their Wildlife Impact

Charles Knapp, Ph.D. | Posted 02.26.2016 | Green
Charles Knapp, Ph.D.

Across the U.S., there are an estimated 50,000 species that are non-native to their environments, 4,300 of which are considered "invasive" by the U.S....

Back From the Brink to Back to the Brink: Species Conservation in a Complicated World

Charles Knapp, Ph.D. | Posted 11.30.2013 | Green
Charles Knapp, Ph.D.

When you think of bringing endangered species back from the brink of extinction, you might picture the California condor or the bald eagle. You probably don't think of the Jamaican iguana.

Declining Iguana Population Signals Trouble in Paradise

Charles Knapp, Ph.D. | Posted 03.25.2013 | Green
Charles Knapp, Ph.D.

Tropical islands brim with wildlife: brightly feathered and boisterous birds, towering palm trees and, of course, scaly lizards. Unfortunately, contrary to popular belief, many lizards are disappearing before our eyes.