<i>April 13, 2036, the 'Doomsday'? </i>

An asteroid travelling at 23,000mph could crash into earth on April 13, 2036 killing millions causing global chaos.
In a scene straight from a science-fiction film, scientists are predicting that the 300-yard-wide Apophis slam into the planet.
If the comet passes through a narrow gravitational keyhole in April 2029 it will be on course for a massive collision seven years later.
The force of earth's gravity is so great that if the asteroid goes through the hole its path could be 'tweaked' sending it straight towards us.
Donald Yeomans, head of Nasa's Near Earth Object Program office, said there was a chance the asteroid could collide with earth.
'If it goes through what we call a keyhole during that close Earth approach… then it will indeed be perturbed just right so that it will come back and smack Earth on April 13, 2036.', he told Life's Little Mysteries.
Professor Leonid Sokolov of the St Petersburg State University told the RiaNovosti website: 'Apophis will approach Earth at a distance of 37,000-38,000 kilometres on April 13, 2029.
'Its likely collision with Earth may occur on April 13, 2036. Our task is to consider various alternatives and develop scenarios and plans of action depending on the results of further observations of Apophis.'
Russian scientists held a meeting 14 months ago to look at launching an operation to knock the asteroid off path.
Although Russian scientists are predicting the asteroid may strike earth, Mr Yeomans said it is unlikely.