When I googled “English major who taught herself calculus,” Google gave me the result I wanted — plus a most unhelpful suggestion.

Ready to go beyond this week’s headlines? 5 primary sources worth reading next — about Facebook, research ethics, and data policy changes.

Today’s round-up of need-to-know stories features a rare argument in favor of Google Glass, a lyrical take on the intelligence of worms and jellyfish, and a discovery that might help explain how galaxies work.