Castoreum, a substance from sacs near a beaver’s anus, has been used in human products for more than 2,000 years. Some wonder if it's still an ingredient on today's grocery shelves.

The discovery of four lynxes in the Scottish Highlands reinvigorated a debate over an illicit conservation practice that has ...

Beavers, which are the world's second largest rodent, have been reintroduced into parts of the Britain for the first time in four centuries in a bid to restore ecological order ...