NPR News

Scientists have discovered a new subatomic particle with profound implications for understanding our universe. On Wednesday, they announced they've found a particle believed to be the long-awaited Higgs boson. Nicknamed the "God particle," it represents the final piece in a theory that explains the basic nature of our universe.

As we celebrate all things American on the Fourth of July, we often remember the great minds that have shaped our nation's history.

But this afternoon, as you're devising new techniques to get slow-moving ketchup from the bottle to your hot dog, you're also celebrating the birthday of another innovative American: Pulitzer Prize-winning cartoonist Rube Goldberg.