The only picture ever taken of Concorde flying at Mach 2 (1,350 mph). Taken from an RAF Tornado fighter jet, which only rendezvoused with Concorde for 4 minutes over the Irish Sea: The Tornado was rapidly running out of fuel, struggling to keep up with Concorde at Mach 2.
A two-headed albino Honduran Milk Snake is shown in Ridge Manor, Florida. Snake of this species are normally orange and black. Daniel Parker, a University of Central Florida biologist, says two-headed snakes have been documented to live as long as 20 years in captivity. But with two brains giving commands to a single body, Parker says the snake would have a difficult time surviving in the wild.
Ten of Britain's rarest wild flowers – in pictures