Even as scientists make astounding discoveries about the navigational and physiological feats that enable migratory birds to cross immense oceans or fly above the highest mountains, go weeks without sleep or remain in unbroken flight for months at a stretch, humans have brought many migrants to the brink of extinction. Based on his newest book "A World on the Wing," author and researcher Scott Weidensaul takes you around the globe-- with researchers in the lab probing the limits of what…

While so many of our place names-- Wissahickon, Manayunk-- are of Lenape origin, most of us know far too little about the region’s original people. During Native American Heritage Month, members of the Lenape Nation of Pennsylvania share their historic relationship to the land they called Lenapehoking. Living in large settlements, the Lenape practiced agriculture, growing the Three Sisters, hunted and harvested the bounty of the land, and significantly altered the composition of forests by the clever use of fire.…