Farmers and parents have slammed Blue Peter for encouraging children to stop eating meat after the TV show urged viewers to go vegetarian for a climate change challenge. The children's series is offering green badges - similar to the famous blue ones - to youngsters who are environmentally friendly as part of a two-week pledge. Sports teams can also apply for their whole group to become 'climate heroes' by switching off lights and appliances when they leave the room, alongside drinking from reusable water bottles. They can further receive the badge by choosing a vegetarian option for a meal, with the BBC show listing plants as one of their 'supersized pledges'.