It's just about Thanksgiving here in the US; a special time during which we count our blessings. And this year, Tangents is giving you an extra thing to be thankful for: Stefan's our special guest!
Our long lost co-host returns to talk to us about wings: birds love to use 'em, people love to eat 'em, and planes need them too, I guess. Sit around the table with us, won't you, as we pass out some heaping helpings of science knowledge. Pass the gravy!
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[Trivia Question]
Number of bird wings in the Burke Museum
https://www.burkemuseum.org/collections-and-research/biology/ornithology
https://www.audubon.org/news/behind-scenes-worlds-largest-bird-wing-collection
[Fact Off]
Club-winged manakins use wing feathers to chirp/sing
Video & audio: https://www.youtube.com/watch?v=tSHjhCN6NC0
Audio-only clips: https://ebird.org/species/clwman1
Picture of feathers: https://commons.wikimedia.org/wiki/File:PipraWing.jpg
https://www.allaboutbirds.org/news/singing-with-his-wings-the-club-winged-manakins-display/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3440988/
[Ask the Science Couch]
Planes flying upside down
https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/what-is-lift/
https://www.popsci.com/flying-upside-down-physics/
https://www.flyingmag.com/why-can-airplanes-fly-upside-down/
https://howthingsfly.si.edu/ask-an-explainer/how-do-planes-fly-upside-down
[Butt One More Thing]
Airplane and wing butt lines
http://www.aerospaceweb.org/question/design/q0289.shtml
https://www.aircraftsystemstech.com/p/location-numbering-systems-even-on.html