Bookies are slashing the odds on a world leader revealing that aliens have visited and continue to visit the Earth before the end of the year. President Obama and David Cameron are among the names that have been tipped to disclose the truth that aliens are walking among us. Mirror.co.uk reports: Activists are stepping up calls today for governments around the world to formally acknowledge that extra-terrestrials are engaging the human race. World Disclosure Day is being held to raise awareness of the so-called Roswell incident 69 years ago and end the ‘truth embargo’, say organisers. It is claimed an alien spaceship crashed on a remote ranch in New Mexico in the first week of July 1947. The Roswell Army Air Force issued a press release saying the military had recovered the remains of “flying disc” which made front page news around the world. But on July 8, General Roger Ramey announced at a press conference that the object was just a weather balloon, sparking claims of a cover-up. Stephen Bassett, America’s only registered lobbyist on the UFO /ET issue, spoke at the Alien Cosmic Expo late last month: “World Disclosure Day is not a prediction that disclosure will happen [...]