Synesthesia is a superpower phenomenon whereby a lucky group of people see color when exposed to stimuli, most commonly sounds. It's the inspiration behind some famous art and music — but it's virtually impossible for mere mortals to get their heads around. This visualization is the best attempt I've yet seen.
Humans evolving into hyper-intelligent beings is a powerful idea in science fiction, but that's probably where the idea will have to stay. Our brains have reached an evolutionary "sweet spot", and we can't get much smarter without making major trade-offs.
Now the Synethesia Mandala high-def drum and synthesizer is about to bust out in version 2.0, sprouting itself a USB 2.0 port that lets you hook it up to any PC or Mac. Synethesia is calling it "the only electronic drum that truly emulates an acoustic drum." It's called high-def because it has 128 concentric rings…