Math: It’s Not Just For Time Travelers
A lot of the kitch out there marketed at would-be time travelers works just as well as apocalypse survival gear. Knowing a few basic equations, or having a copy of “The Way Things Work” can make the difference between rebuild society and living in caves.
Here’s a clever example – a handy t-shirt you can wear with the basics of flight, health, technology and chemistry.
Available from ThinkGeek, fine purveyors of geekwear.
Keep Your Powder Dry,