Scientists mapped the genome of a shark that can live 400 years. It could unlock new secrets to longevity

Mysteries surround the elusive Greenland shark, the longest-living vertebrate in the world. Researchers have new insight into the unique fish’s genetic makeup.

​ Mysteries surround the elusive Greenland shark, the longest-living vertebrate in the world. Researchers have new insight into the unique fish’s genetic makeup. Read More Breaking News, Latest News and Videos | CNN