No, this isn't a petrified bowl of spaghetti — it's what the white matter in your brain looks like. The Franklin Institute 3D-printed this remarkably complex model for a new exhibit. Skeptics said it couldn't be done, but the finished product accurately reflects the 2,000 strands of nerve cells found in the brain.
Remarkably, this is a photograph of what was once an actual adult human brain — but without the characteristic ridges and folds. But because the patient's medical records were lost, we may never know what life was like for this person.