It is past midnight on a beach in southern Thailand and 12-year-old Prin Uthaisangchai is anxiously staring at a leatherback turtle nest, waiting for scores of the endangered hatchlings to scrabble out from the sand. The Bangkok secondary school pupil is producing a short documentary about the snappers, under a programme run by the Environmental and Social Foundation, an NGO working to educate children about conservation. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES