Thunberg has inspired a number of her school-aged peers in what has been described as "The Greta effect". In response to her outspoken stance, various politicians have also acknowledged the need to focus on climate change. Britain's secretary for the environment, Michael Gove, said: "When I listened to you, I felt great admiration, but also responsibility and guilt. I am of your parents' generation, and I recognise that we haven't done nearly enough to address climate change and the broader environmental crisis that we helped to create. " Labour politician Ed Miliband, who was responsible for introducing the Climate Change Act 2008, said: "You have woken us up. We thank you. All the young people who have gone on strike have held up a mirror to our society … you have taught us all a really important lesson. You have stood out from the crowd. " In June 2019, a YouGov poll in Britain found that public concern about the environment had soared to record levels in the UK since Thunberg and Extinction Rebellion had "pierced the bubble of denial".