Paul McCartney has worn many hats throughout the course of his half-century long career, from acting as half of The Beatles‘ iconic Lennon/McCartney songwriting team, to launching his own post-Beatles projects like Wings, to an extensive solo career. Sir Paul is one of the most famous and culturally influential people on Earth, and now he’s using his platform to try and help save it. In a new short film entitled One Day a Week (seemingly a nod to the Beatles’ “Eight Days A Week”), McCartney plays the role of narrator, helping to educate viewers about the devastating impact of the animal agriculture industry on climate change.

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“Perhaps it’s time to ask ourselves, ‘what can I as an individual do to help?’…There’s a simple but significant way to help save the planet and all its inhabitants, and it starts with just one day a week. One day without eating animal products can have a huge impact in helping maintain that delicate balance that sustains us all.'” The video shows the various ways in which animal agriculture is negatively affecting our climate, and recruits Paul and his family as well as A-List actors like Emma Stone and Woody Harrelson to help advocate for taking one day a week off of animal products in an effort to decrease the industry’s massive carbon footprint. McCartney explains that it’s a difficult prospect to convince people to give up animal products altogether, but it’s much easier to convince them to do so for a single day a week once they know the impact that it has. As Paul professes: “One day a week can make a world of difference.”

To learn more about the message of Meat Free Monday, launched by McCartney and his daughters in 2009, head to the initiative’s website.

Watch the official “One Day A Week” mini-doc featuring narration by Paul McCartney below courtesy of YouTube account SupportMFM:

If you want to hear more on the subject from McCartney, watch his extended interview with National Geographic Editor in Chief Susan Goldberg about his “Meat Free Monday” campaign, as well as how a NatGeo photo inspired him to write Beatles hit “Lady Madonna”:

[h/t – National Geographic]