I'm currently taking Harvard Business School's HBX CORe, an online business fundamentals course that covers analytics, accounting, and economics. I'm writing up what I'm learning and making it accessible to non-MBA types. Topics covered include minimum wage, the math behind trendlines, and why the Spiders Georg meme is off, amongst others!
The cartography of ethnomusicology? The archaeology of algebra? How about the radiology of ecology? OlogyBot is a Twitter bot that pairs two randomly-selected fields of study (mostly -ologies).