At dusk in fields in Pennsylvania and throughout the Great Lakes region in spring, an odd-looking bird takes to the sky for an elaborate, acrobatic display. We take you there.
Despite overwhelming public support for reintroducing the American marten, the Game Commission wants more input from hunters, who were lukewarm about the plan.
Mussels once numbered the millions in local rivers. Now researchers are hoping to find a type of salamander that an endangered mussel needs to survive.