Britain's Queen Elizabeth II watches as a flower is immersed in liquid nitrogen as part of a science experiment at the Royal Institution of Great Britain, London. (Photo by Dominic Lipinski - PA Images/PA Images via Getty Images)
Britain's Queen Elizabeth II watches as a flower is immersed in liquid nitrogen as part of a science experiment at the Royal Institution of Great Britain, London. (Photo by Dominic Lipinski - PA Images/PA Images via Getty Images)