Ariel Garten is a Canadian artist and scientist. That's a pretty unusual combination and gives her a unique insight into the powers of meditation.
She's a neuroscience expert and in this podcast, gave what I thought was probably the best description of why we need meditation that I've ever heard. Listen on to the end of the podcast for this. It'll blow your socks off.
Ariel's also has a company - Muse meditation devices that help make meditation easy, and you can find them here.