Prince Charles's passion for the environment has been passed down to his sons, and Harry ensures he's conserving energy around the home by turning off unnecessary lights at every opportunity. The Prince recently revealed that this has resulted in some interesting conversations with Meghan. "My wife certainly goes, 'Well, why turn the lights off? It's dark,'" he admitted in a documentary that aired on Prince Charles's 70th birthday. "I go, 'We only need one light, we don't need, like, six.'" he continued.