The annual 2020 Math Science History Holiday Puzzle is UP!! This year the first person to respond with the correct answer receives a $25 Amazon gift card! The details are in the podcast and at MathScienceHistory.com. Thank you for a wonderful year! Until 2021, carpe diem!

To buy my book Hypatia: The Sum of Her Life on Amazon, visit https://a.co/d/g3OuP9h

All music is public domain. Little Prince by Lloyd Rodgers. www.LloydRodgers.com. We Wish You a Merry Christmas by the U.S. Naval Academy. Ambient 03 by Sscheidl at Pixabay. A Journey Beyond by Christian Bodhi.