A map of North America showing the original range of the American bison. The map shows the dates of local extermination, location, and numbers of wild animals in 1903 (Central Canada and the Rockies). "Beyond all doubt the most...

This Federalist house, designed by Ithiel Town and built in 1810, most notably served as the longtime home of botanist and Harvard professor Asa Gray (1810-88). Gray was one of the most important botanists of the 19th century, publishing...

Rock Islands Southern Lagoon covers 100,200 ha and includes 445 uninhabited limestone islands of volcanic origin. Many of them display unique mushroom-like shapes in turquoise lagoons surrounded by coral reefs. The aesthetic beauty of...

In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means 'Origin of the Sky'. Located on the east coast of the Yucatan peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as...