This quick TED talk entry is courtesy of TED.com. When artist Salvatore Iaconesi was diagnosed with brain cancer, he refused to be a passive patient — which, he points out, means “one who waits.” So he hacked his brain scans, posted them online, and invited a global community to pitch in on a “cure.” This sometimes meant medical advice, and it sometimes meant art, music, emotional support — from more than half a million people.