In the second part of this Arctic adventure series, Chris Packham, Helen Czerski and a team of explorers and scientists investigate an iceberg floating out at sea. Their aim is to discover the forces that gradually destroy an iceberg by looking at a massive tabular 'berg 50 kilometres from the Canadian coast.

During the expedition, the team confronts a large number of polar bears - the largest land predator on earth. And while they are working on the iceberg, a large chunk of it actually breaks off beneath their feet. Despite these dangers, the team succeeds in revealing the mysteries of these stunning natural phenomena. Show less