All Animals Have a Finite Number of Heartbeats in a Lifetime

Does that mean there’s a limit to how long humans can live?

Image Source: Flickr

Humans have always been fascinated by the idea of prolonging life. China’s first emperor, Qin Shi Huang, launched a search for the elixir of life but then died at the age of 49. And 1,000 years later, Genghis Khan famously spent considerable sums on seeking the…