The Welwyn & Hatfield Times reports that a teenager is fighting for his life in hospital after a freak accident at the Sonisphere festival in Knebworth, United Kingdom.The 15-year-old boy was thrown from a fairground ride in the grounds of Knebworth House, where the festival is taking place. He was strapped into the £3-a-go spinning wheel when he came loose and was launched into the air, according to Mirror.co.uk. He plunged into a row of portable toilets 30 yards away before slumping to the ground. Paramedics raced to the scene shortly before 2:30 p.m. yesterday (Saturday, August 1). Ambulance service spokesman Gary Sanderson, who was at the concert, said: "The young man sustained potentially life-threatening injuries and our paramedics at the venue worked rapidly to treat and stabilize him. Following this, he was rushed to an awaiting trauma team at the Lister Hospital in Stevenage."