In hindsight this might be a medical breakthrough. Tufts researchers grafted eyeballs to the tails of blind tadpoles, then used migraine medication to promote nerve growth, resulting in tadpoles that see with their tails. Even more remarkably, the scientists connected the eyes not to the brain, but to the spinal cord. The breakthrough suggests that existing drugs might help transplant patients integrate new organs or tissues into their systems. In its most far-out iteration, the discovery could be used to modify the human body for extreme conditions like space travel.