And where do they keep their suitcases?
Viewers like you help make PBS (Thank you π) . Support your local PBS Member Station here:
https://to.pbs.org/PBSDSDonateSubscribe to It's Okay To Be Smart:
http://bit.ly/iotbs_sub As winter approaches, V-shaped flocks glide overhead as the world's birds begin their long treks to warmer climates. Humans used to have some pretty crazy theories about where birds went for winter, like the moon, or to the bottom of the ocean.
How did we learn the real story? And where DO birds go for winter? What are the longest bird migrations? How do birds store up energy for their long journey? How do birds navigate? Why do they fly in a V-shape?
Find out in this week's video!
Charles Morton's theory of birds on the moon:
http://wrd.cm/1xMKc5k Read Charles Morton's original 1703 pamphlet!
http://bit.ly/1C5AKhk The story of the stork with a spear in its neck:
http://bit.ly/11PgkIs Aristotle's theory of bird transmutation:
http://bit.ly/1uwQwHX The "barnacle goose"
http://bit.ly/1C5BiUg The Arctic tern's record-breaking migration:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2836663/ The bar-tailed godwit's fat-fueled migration:
https://sora.unm.edu/sites/default/files/journals/auk/v115n01/p0196-p0203.pdf Ruby-throated hummingbird mighty migration:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1325055/ The avian aerodynamics of the "flying V"
http://bit.ly/1vFFlUsThe many senses that birds use to find their way:
http://bit.ly/11qN9vr How birds use magnetic fields to navigate:
http://bit.ly/1r2jYLy Produced for PBS Digital Studios
Joe Hanson - Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Katie Graham - Director of Photography
Andrew Matthews - Editing/Motion Graphics
Dalton Allen - Post-production intern
John Knudsen - Gaffer
Theme music:
"Ouroboros" by Kevin MacLeod
Stock images by Shutterstock
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This site provides links to random videos hosted at YouTube, with the emphasis on random. π₯
Origins of the Idea π±
The original idea for this site stemmed from the need to benchmark the popularity of a video against the general population of YouTube videos. π§
Challenges Faced π€
Obtaining a large sample of videos was crucial for accurate ranking, but YouTube lacks a direct method to gather random video IDs.
Even searching for random strings on YouTube doesn't yield truly random results, complicating the process further. π
Creating Truly Random Links π οΈ
The YouTube API offers additional functions enabling the discovery of more random videos. Through inventive techniques and a touch of space-time manipulation, we've achieved a process yielding nearly 100% random links to YouTube videos.
About YouTube πΊ
YouTube, an American video-sharing website based in San Bruno, California, offers a diverse range of user-generated and corporate media content. π
Content and Users π΅
Users can upload, view, rate, share, and comment on videos, with content spanning video clips, music videos, live streams, and more.
While most content is uploaded by individuals, media corporations like CBS and the BBC also contribute. Unregistered users can watch videos, while registered users enjoy additional privileges such as uploading unlimited videos and adding comments.
Monetization and Impact π€
YouTube and creators earn revenue through Google AdSense, with most videos free to view. Premium channels and subscription services like YouTube Music and YouTube Premium offer ad-free streaming.
As of February 2017, over 400 hours of content were uploaded to YouTube every minute, with the site ranking as the second-most popular globally. By May 2019, this figure exceeded 500 hours per minute. π
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