What I saw on the web on 2023.1.6

1. This Sikh mom couldn't find a proper helmet for her boys. Now, she's designed her own
   by CBC News
   https://www.cbc.ca/news/canada/toronto/sikh-helmet-1.6704660
   this feels long overdue, but a good development
   via rss
   
   
2. Zero to the power of zero
   by wikipedia
   https://en.wikipedia.org/wiki/Zero_to_the_power_of_zero
   a thorough treatment of the topic
   via googlery
   
   
3. Wellerman
   by Double Bass Orchestra, coached by Matthew Boggs
   https://www.youtube.com/watch?v=o5R3Q_9tFog
   that's like . . . multi-tuple bass!
   via reddit
   
   
4. Introducing the Baroque Guitar
   by Sergio Bucheli
   https://www.youtube.com/watch?v=9o-TOg-y_BI
   a marvellous instrument, and he includes some of my favourite pieces for it
   via youtube recommends from previous vid
   
   
5. Why Not Mars
   by Idle Words
   https://idlewords.com/2023/1/why_not_mars.htm
   delineating all the problems with human-crewed mars missions
   via discord? maybe?
   
   
6. Riddle solved: Why was Roman concrete so durable?
   by David L. Chandler
   https://news.mit.edu/2023/roman-concrete-durability-lime-casts-0106
   this has been an intriguing engineering problem for some time. perhaps now solved?
   via discord