The cougars are believed to have been extinct for at least 70 years.
Fifteen endangered sea turtles rehabilitated by Boston’s New England Aquarium were released back into the ocean Saturday.
Visitors can now see the newest member of the gorilla family at the Franklin Park Zoo.
Federal officials have announced more than $4 million in projects in four states as part of a wildfire-fighting strategy but the efforts could hurt training operations at numerous U.S. military facilities in the West.
The government is preparing insufficient protections for a ground-dwelling bird that has declined significantly over the past century and soon will face a possible endangered species listing.
A local tax accountant recently snapped photos of the rare sturgeon fish in the Charles River.