What is happening in Antarctica? It's feared that if the ice sheet melts, it could add metres to sea levels putting many low lying towns and cities under water. Sky News' science correspondent Thomas Moore is travelling to the Antarctic to check out the latest research in one of the most vulnerable places on earth. In this episode, Thomas is on board the Royal Research Ship James Clark Ross for the journey to the site of the British Antarctic Survey's main science base on the Antarctic Peninsula. He talks to scientists and crew on the 1,300 mile voyage south form Chile.