Duchess Meghan has had to make quite a few adjustments to how she does things when it comes to 'royal protocol' since marrying into the royal family, but there's one rather unexpected change that she's had to make and it's all because of one of Prince Harry's habits.
According to the Prince himself, he has a particular habit that he's "obsessed" with and it's all thanks to his father Prince Charles, who encouraged the habit in both him and his older brother Prince William from a young age.
"He's a stickler for turning lights off," Prince Harry revealed in the BBC documentary, Prince, Son & Heir: Charles at 70.
"And that's now something I'm obsessed with as well."
Prince William agreed adding, "I know, I've got serious OCD on light switches now, which is terrible."
According to Harry, his light switching obsession has been the cause of a few disagreements between him and Meghan, "Which is insane," Harry adds, "because – I don't know whether your wife doesn't – my wife certainly goes, 'Well why turn the lights off? You know, it's dark.'
"I go, 'We only need one light, we don't need like six,'" he tells Prince William laughing.
Of course as you can probably guess the reason behind the habit is a good one.
It's no secret that Prince Charles, along with his two sons are big conservationists and often talk about the need for immediate climate change action.
In the documentary he said while turning off the lights was a very small action, small actions that can be taken when it comes to helping to decrease the impact on the environment, can have a big payoff in the long run.
"All of a sudden it becomes a habit and those small habit changes he's making, every single person can do," Prince Harry says.
"And I think it's one of the key lessons that [Prince Charles] taught us."
Last month Prince Harry posted a carousel of photos on the official Sussex Royal Instagram account in celebration of Earth Day. The images show some of the world's most endangered species and ecosystems, taken by Prince Harry himself, who is passionate about global conservation and the protection of wildlife.
Earlier in April Prince Harry joined his older brother Prince William, father Prince Charles and Sir David Attenborough, is not only a vocal climate change activist but also narrates the series, to attend at the premiere of Netflix's Our Planet documentary series at the Natural History Museum in London.
The Duke and Duchess of Cambridge welcomed their first child, Archie, on May 6, and before Archie's birth the Prince spoke about how preparing to be a father has made him "more passionate than ever" to help youth lead change to build a better world for future generations.
"As someone who is about to be a father, I am acutely aware of our shared responsibility to make this world more resilient and its inhabitants more accountable for the next generation," Harry said during his speech at the Commonwealth Youth Roundtable.
"The only way to see real progress is not by chance, it's by change. Let's get to work."
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