2/5 Griff Rhys Jones travels from Liverpool to the Humber along Britain's working waterways. (R)
1/6 Dara O Briain and Professor Brian Cox take a special look at Mars exploration.
2/6 Brian, Dara and their guests return to celebrate all things astronomical.
2/3 Gordon and the team return to Svalbard in mid-June on the trail of Lyra and her cubs.
Wednesday 9 January 2013