Secrets of a wildlife cameraman
14 March 2013 Last updated at 16:11 GMT
Through his work on groundbreaking natural history programmes like Frozen Planet and Planet Earth, wildlife cameraman Doug Allan has experienced first-hand some of the most world's most amazing environments and sights.
School Reporters from The Mary Erskine School in Edinburgh asked Doug about his career and his views on the effects of climate change, not to mention his narrow escape after a surprise encounter with a walrus!
This report was broadcast on the 4 O'Clock Show on BBC 4 Extra