Why Antarctic explorers are retracing Shackleton's epic rescue mission

Stranded on the Antarctic ice, their ship sunk - how did Ernest Shackleton's crew survive for two years before being rescued?

ITV News Science Correspondent Martin Stew is on his way to the scene of that mission impossible - more than a hundred years ago.

And from penguins to chimpanzees - conservationist Jane Goodall tells us why what happens in Antarctica impacts all of us.

Martin tells Lucy Watson and this is What You Need To Know.