Absolutely, we have spread into new habitats, disrupting ecosystems.
No, that label can't be applied to us.
Perhaps, it depends on how broadly you define invasive.
Wynne was a reporter at The Stamford Advocate. She has interned at Discover magazine and has freelanced for The New York Times and Scientific American's web site. She has a masters in journalism from Columbia University and a bachelor's degree in biology from the University of Utah.