In the third and final part of Sky News' Antarctica series, Science correspondent Thomas Moore chats deglaciation, the temptation to mine the seabed for valuable commodities and the threat of plastics.<br /><br />Thomas is on board the Royal Research Ship the James Clark Ross, making its way up the peninsula. Sunlight hits the seabed as the ice retreats and a team of scientists are up at 4am trawling a net on the bottom of the fjord. <br /><br />Other teams are examining the quantity of plastic found in the Antarctic - extraordinary given the remote nature of the location.