Steve Mould is a science presenter and comedian with a physics degree from the University of Oxford. He appears as the science expert on British television shows such as The One Show, Blue Peter, and The Alan Titchmarsh Show. He has a YouTube channel with more than 138,000 subscribers, and his videos regularly achieve hits in the hundreds of thousands. One of these videos (about "self siphoning beads") went viral worldwide, gaining more than 1.7 million hits and being mentioned in the New York Times and on the BBC. Scientists later discovered why it performed in the mysterious way it did and dubbed it "The Mould Effect". In addition to this he presents a radio show on BBC Radio 4 and is part of a live comedy/science trio called Festival of the Spoken Nerd who performs at festivals and events.