Scientists have found a way to reverse aging in mice. In the field of longevity sciences, this is a milestone in the ultimate goal of reversing aging in humans. David Sinclair first made this discovery in his lab at Harvard, and attributed early research to models of design by Dr. Shinya Yamanaka, who won the Nobel Prize for the embryonic reprogramming of human cells. With Sinclair’s experiment, sibling mice were programmed to have one age faster than the other. When the older mouse hit a certain stage, it would regress. A challenge with reversing aging in humans, however, that hasn’t fully been resolved, is memory retention. The implications of this include the fact that preventing, and hence, reversing aging like observed in animals, should be able to retain the capabilities of an organism – a person should not have an extended lifespan, but deteriorated physical and mental capabilities. Regeneration has been a field of interest for solving this problem. By studying the genes of creatures like certain fish, lizards, and the axolotl, a sector of longevity sciences has been analyzing how these creatures can regrow limbs, and also, keep certain parts of themselves frozen in time.