Biology and mathematics—the practical and the theoretical—can be surprisingly uneasy bedfellows, but their union could help uncover the mysteries of life.
The notion that aging is a natural, inevitable part of life is so fixed in our culture that we rarely question it. But biologists have been questioning it for a long time.
Phantom pain, experienced in missing limbs, tortures amputees and puzzles scientists. Srinath Perur cycles around Cambodia with a man who treats it with mirrors.