Geek Shirt 17: CERN. Birthplace of web browsers, the World Wide Web, plus the Large Hadron Collider. Which accelerate particles at speeds so fast they stop measuring by km/s & instead count how many electron-Volts of momentum they have, so they can smash them together & look at the pretty explosions. I picked up this shirt at their gift shop a few years ago, when I managed to organise a private behind-the-scenes tour of the LHC.
I also did a show & tell of my electric vehicle this week, explaining how they work & offering rides/torque demonstrations for donations. I raised a decent amount too! 
