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
Albertine Necker de Saussure French chemists that she visited included Antoine Lavoisier; Antoine François, comte de Fourcroy; and Claude Louis Berthollet. In a letter to her father, Albertine described experiments she performed in their laboratories. Albertine Necker de Saussure's literary work began relatively late in life, after her children were grown. Her principal work, "l'Education Progressive" or " Etude du Cours de la Vie" (1828), was a long and influential study of educational theory and the education of women. The work is divided into two parts, originally in three volumes which were published successively. In the first two volumes, in which she examines general