Deadly pathogens lying dormant in centuries-old Arctic permafrost could become the latest threat from global climate change. Pathogens – disease-causing organisms – have been trapped for centuries in frozen ground across the Arctic, including vast swaths of Alaska, Canada and Russia. And warming temperatures across the globe could unleash them, while their impact on humans, plants and animals is unknown. The potential release of the pathogens has now seized the attention of federal government scientists, medical professionals and Pentagon officials. Find out why the stakes are high in the link in bio.