My anonymous tipmaster sent me a very cool video earlier this week showcasing the universality of the pentatonic scale.  (Bear with me: it means that anywhere in the world, people watching Bobby McFerrin jump around a stage can actually sing on pitch and together with almost no instruction).  This incredibly cool exploration of sound, music, and the way we think  reminded me that I’d been collecting some very fun sound-related links to share with you here on Brain Popcorn.

A Not So ‘Silent World’

Diving in New England is a relatively quiet business.  Most of the time, it’s your air bubbles, your dive buddy’s air bubbles, and the occasional scrape of gear on rock that accompanies you in the deep.  But not always, and not elsewhere.  Diving in the USVI a few years ago I was thrilled and startled to be surrounded by what seemed like a chorus of marine…