I always enjoy the fun, approachable, fast-paced science videos from ASAP Science. Here, the team presents a quick primer on the biology of aging. In just three minutes, you can learn why you can blame your father for a shorter life span, why some worms are virtually immortal, and what a telomere is. Enjoy!
For a little bit more information on telomeres and aging, I recommend you check out this article from our blog archives about measuring telomere length.