If humans have any hope of living forever, we should probably take a hint from the dozens of other animals on Earth that far outpace our measly 71 years.
One of the longest-lived of these animals is the Greenland shark, which researchers only recently discovered could survive for so long.
格林兰鲨就是这些最长寿动物中的一员，研究人员最近才发现它们可以活这么长。
On a 2017 expedition, researchers learned more fascinating details about the shark, including that it's heart rate is incredibly slow — only beating once every ten seconds.
