Necker Island (British Virgin Islands) world, the challenge begins at the annual Consumer Electronics Show in Las Vegas with the top 10 new innovations progressing to the finals at Necker Island where Branson joins the judging panel along with technology figures and investors from Silicon Valley. The Necker Cup, an exhibition tennis tournament held at the end of the tennis season, has been held on the island annually since 2012. In February 2017, former U.S. President Barack Obama and his wife Michelle visited Necker as guests of Sir Richard Branson. On August 22, 2011, The Great House burned down in a blaze believed to be
Richard Branson by lightning caused by Hurricane Irene in 2011. Branson has stated in a number of interviews that he has been much influenced by non-fiction books. He most commonly mentions Nelson Mandela's autobiography, "Long Walk to Freedom", explaining that Mandela was "one of the most inspiring men I have ever met and had the honour to call my friend." Owing to his interest in humanitarian and ecological issues, Branson also lists Al Gore's best-selling book, "An Inconvenient Truth", and "The Revenge of Gaia" by James Lovelock amongst his favourites. According to Branson's book, "Screw It, Let's Do It: Lessons in Life",