Everybody loves a challenge and pupils at Slough's St Bernard's Preparatory School rose to theirs when headteacher Nathan Cheesman asked them to take on climate change.

His 'headmaster's challenge' for the school holidays asked pupils to find ways of becoming 'stewards of the world'.

It inspired Shariya Imam, eight to make her own video. She managed to get interviews with Slough MP Tan Dhesi, the director of the Science Museum Roger Highfield, Robbie Kirkman from the famous Eden Project in Cornwall and her own local Buddist, Hindu, Sikh and Muslim religious elders - all of whom feature in her video.

School marketing and PR officer Sarah Oliver said: "It is a wonderful video with each luminary delivering their own message to St Bernard’s Prep on how we can best serve the world and tackle climate change and environmental problems."

Shariya won the 'upper school' section of the headteacher's challenge.

Winners of the lower school section were Archie Jalaf and Adam Hussain, both six.

Archie was in a video that showed him picking up litter in his nearest park. While Adam wrote to Windsor's MP Adam Afriyie asking for his help in stopping people throwing plastic bags in the river after they had fed the swans at Windsor - he even got a sympathetic reply.