This week's puzzle is a collaboration between Caleb Madison and the esteemed Joon Pahk. Joon teaches physics at Harvard University. His hobbies other than puzzles include trivia and sports. We're extremely proud to have him in the mix!
Joon and Caleb's puzzle is called "Women in Their Element," and it's 3/5 in difficulty. The theme was the result of an epic online brainstorming session (our thanks to everyone who took part in that).