The last episode deals with the future of conservation. It begins by looking at previous efforts. The 'Save The Whales' campaign, which started in the 1960s, is seen to have had a limited effect, as whaling continues and fish stocks also decline.
Six different teams of scientists arrive on the continent after years of planning. The continent is home to the coldest, windiest, driest conditions on the planet, and without Scott Base as their central hub, these teams wouldn't survive. Each team's results could have massive implications to better understanding how climate change is affecting life around the world.
In February 2013, a hole opened up beneath a home in Florida, and swallowed a man. Jeff Bush was asleep when a sinkhole opened up beneath his bedroom. Despite the efforts of his brother to rescue him, Jeff was never seen again and his body was never recovered. Professor Iain Stewart travels to Florida to try and understand what killed Jeff, and why the geology of this state makes it the sinkhole capital of the world.