If you're planning to go to the 2014 Annual Fall Meeting of the American Physical Society in Illinois this Saturday, you might be in for a bit of a surprise with the final talk of the day. Because that's when plasma physicist Dr John Brandenburg will present his theory that an ancient civilisation on Mars was wiped out by a nuclear attack from another alien race. In his bizarre theory, Dr Brandenburg says ancient Martians known as Cydonians and Utopians were massacred in the attack - and evidence of the genocide can still be seen today. Back in 2011 the...