Climate action campaigner Lucy Gilliam has won a top award in an international short film competition.

"One minute to save the world" challenged entrants to make a 60-second video on any aspect of climate change. Lucy and her friend Dougal made an animated film called "Pee and Grow", using only recyclable materials such as cardboard and string. They beat 140 other entries to get to the final shortlist of 30, and went on to win the creative award from the campaign group WeCAN.