is a good one. "this explains everything." deep, beautiful, elegant theories of how the world works. john brockman asks some of the world's best minds for their favorite explanations of anything. the result is a collection that reads like the best ted talks ever. it's an absolute pleasure to read. now, for the last look. good signs sometimes takes a very long time. it was 11 years after nasa was founded that we landed on the moon. the human genome project took 13 years. it's been almost 50 years since the particle was first proposed. and it still hasn't been conclusively proven. but australia's home to the world's longest running lab experiment. it's on the verge of a break through of sorts. 86 years ago a professor at the university of queensland initiated this pitch drop experiment wanting to show that some things that look solid can