4/13 Dr Bryan Fry uses hi-tech tools to uncover the true nature of the world's largest lizard. (R)
3/6 Cranes and geese soar over Venice, the white cliffs of Dover and Edinburgh. (R)
19/23 In Waterford, Alice Roberts learns how to make glass from sand. (R)
1/3 Neil Oliver goes in search of the very earliest stirrings of religion in Britain.