Former US President, Barack Obama, said in an interview that aliens are real but that he has not seen them. He later clarified on social media that his comments were made in line with the spirit of the speed round of questions, adding that statistically the chances are that life is out there but he saw "no evidence" while serving as president. But what evidence do we have on extra terrestrial life? Are governments concealing evidence? Is there anyone out there? Petrie puts these questions to you after hearing from Broadcaster, Richard Lawrence, who wrote 'UFOs & The Extra-terrestrial message'.

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