Explorer Steve Backshall and sniffer dog Bruiser hunt for tigers through the undergrowth.
Sci-fi thriller in which there are 18 days to save the world from an approaching asteroid.
Richard Fortey focuses on a series of cataclysms over a million-year period.
A look at how our ideas about dinosaurs have changed over the past 40 years.
Mark Beaumont goes on a journey through Exmoor, starting in Dulverton.