“ If a tree falls in a forest outside your lightcone, does it make a sound? (read full comment) ” 

Posted on September 28, 2010 at 9:43 AM EDT

“ Ising model for birds on a wire I always thought the following would be a phenomenal high school science fair (or even undergraduate thesis)... (read full comment) ” 

Posted on July 15, 2009 at 11:34 AM EDT