Dr. David Sinclair, co-director of the Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School describes a groundbreaking method that can speed up or reverse the aging of cells in the body—at least in mice. Read more about Science: https://time.com/6246864/reverse-aging-scientists-discover-milestone/ Subscribe to TIME’s YouTube channel ►► http://ti.me/subscribe-time Subscribe to TIME: https://ti.me/3uwZBtG Get the day’s top headlines to your inbox, curated by TIME editors: http://ti.me/the-brief Follow us: Twitter: https://ti.me/3VZVRMQ Facebook: https://ti.me/3uzo7KJ Instagram: https://ti.me/3ux56s9