See Inside a Living Mouse Brain Thanks to Lasers and Carbon Nanotubes

The living brain has always been a tricky thing to study. How do you figure out what's going on without poking, prodding, and jostling the brain so much that it's not working right? A relatively non-invasive new technique developed by neuroscientists at Stanford and Massachusetts General Hospital uses a laser and fluorescent carbon nanotubes to look at the web of tiny blood vessels in the brain.