A group of scientists trapped in a tiny base in Antarctica have sent an email pleading to be rescued after they say a member of their team threatened to kill another colleague. A South African research group dispatched to Sanae IV base, a research station in Antarctica, are isolated on their mission for at least 10 more months. Extreme weather makes leaving and entering nearly impossible and there are thousands of miles between the team and their home continent. This leaves the group with only each other for company in the absence of animals, other humans and society as they...