Nature Now654 Humpback Whales, Fermi’s Paradox and Curious Aliens https://cdn.kptz.org/2024/01/17103551/Nature-Now654-Humpback-Whales-Fermis-Paradox-and-Curious-Aliens.mp3 “Nature Now654 Humpback Whales, Fermi’s Paradox and Curious Aliens”.