Björk has been promoting her latest album Biophilia for quite a while, from the iPad apps that were slowly eked out in advance of the album, to the notbale performances around it, and now some videos following up. Luckily, we love it. The video for “Hollow,” which premiered on NPR today, follows the same bent as the iPad apps, in that it is a computer-generated video of inside the human body. And is quite educational! Check it out below.