A picture taken on November 25, 2015 in Le Bourget near Paris shows the entrance of the venue that will host Paris' climate summit, also known as Cop21. A total of 147 world leaders are due to attend the start of the UN conference, leading Paris authorities to shut down major roads into the capital on November 28 and 29 and make public transport free of charge.AFP PHOTO / DOMINIQUE FAGET / AFP / DOMINIQUE FAGET (Photo credit should read DOMINIQUE FAGET/AFP/Getty Images)
