Buddhist Mantra
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Sikh Mantra
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Inspirational
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Spiritual Music
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German Yodeling
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Science
Numberphile - Interesting math videos on YouTube. One of the best is the Enigma Machine. Math was used to break the code.
Mathlogger - Challenges a Numberphile episode that says 1+2+3... = -1/12
Joe Scott - Eyeball Planets and other smart, weird science topics.
Vsauce - A peek inside Michael Stevens' curious brain. Smart, creative, and zany.
Veritasium - Is there a 9th Planet? Physics-focused and exploratory.
Technology Connections - Is brown really a color? Great for technology deep-dives.
CGP Grey - Sometimes makes mistakes, but worth watching for unique insights.
Computerphile - DNS Cache Poisoning. Similar to Numberphile, but about computers.
Be Amazed - Borders and countries, plus truly amazing videos.
Deep Sky Videos - Crab Nebula and other astronomy content.
Sixty Symbols - The Runaway Star and more astronomy.
Wendover Productions - China's Geography Problem and geopolitical stories.