Anonymous Coward writes: "Mathematicians invent a new math to can and bottle stout beers like Guinness while still getting that satisfying head."
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's now on IFTTT. Check it out! Check out the new SourceForge HTML5 Internet speed test! ×