The bald eagle's recovery is perhaps the best known example of how our environmental laws worked to restore not just a resource but our very national symbol. (scientificamerican.com)
This is the first known example of wild animals adapting to chronic radiation exposure, the researchers say. (sciencemag.org)
This portrait is the earliest known example of what became the conventional manner of depicting an architect by having him holding one of these instruments of his profession. (apollo-magazine.com)