September 13, 2022--Hosts Tim Bray and Bob Spies talk with Scott Weidensaul, avian researcher and author of "A World on the Wing: The Global Odyssey of Migrating Birds." He describes some of the fantastic discoveries being made about the navigational and physiological feats performed by migratory birds to cross immense oceans, fly above the highest mountains, forgo sleep for days or weeks, or remain in unbroken flight for months at a stretch, using infrasound, the earth's magnetic field, and even quantum entanglement.

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