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Many groups of life have conquered the land and water, but only four times in evolutionary history has life taken to the air. The most recent group to achieve flight are bats. Their combination of flight and advanced echolocation have earned them an incredible diversity, a worldwide distribution, and a deep-seated place in human culture, but their evolutionary history is a long-standing mystery, and their fossil record is nearly non-existent. But that's not going to stop us from geeking out about them!\nIn the news: dinosaur scales, diverging crows, a new human, seal evolution, and that butchered mastodon again!\nTime markers: Intro & Announcements: 00:00:00News: 00:04:30Main discussion, Part 1: 00:36:00Main discussion, Part 2: 01:09:30Patron question: 01:49:00\nThe Common Descent Store is open! Get merch! http://zazzle.com/common_descent\nCheck out our blog for bonus info and pictures:http://commondescentpodcast.wordpress.com/\nFollow and Support us on: Patreon: https://www.patreon.com/commondescentpodcast Twitter: https://twitter.com/CommonDescentPCFacebook: https://www.facebook.com/commondescentpodcast/PodBean: https://commondescentpodcast.podbean.com/ iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw\nThe Intro and Outro music is \u201cOn the Origin of Species\u201d by Protodome. More music like this at http://ocremix.org.\nMuscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0http://creativecommons.org/licenses/by/3.0/