What if the world’s top leaders, entertainers, doctors, and scientists asked you to go vegan? That’s the hope for a new campaign from the team that brought you Veganuary. Celebrity supporters include Paul McCartney, actor Woody Harrelson, musician Moby, Joaquin Phoenix, Evanna Lynch, and PCRM founder Dr. Neal Barnard.

Called Million Dollar Vegan, the campaign aims to promote some of the world’s most pressing issues – climate change, global hunger, health, and animal welfare – by engaging with influential figures to inspire positive change.

Young vegan activist Genesis Butler has joined the campaign for its first initiative – to convince Pope Francis to go vegan for Lent, when many practicing Catholics will give up luxuries in the weeks leading up to Easter.

“Farming animals for food has a greater impact on global warming than the emissions from every car, bus, train, ship, and plane on the planet combined,” Butler explains in the video. “It is also the leading driver of deforestation and biodiversity loss and causes immense suffering to billions of animals.”

“We’re asking for Pope Francis’ help to protect our planet by drawing attention to the devastating impact of animal agriculture,” Butler continues. “If he agrees to go plant-based, we’ll give $1 million to the charity of his choice.”

Butler highlights how Pope Francis has previously called for people to act with kindness towards the planet and animals. In his encyclical letter, “Laudato Si’,” he wrote, that climate change “represents one of the principal challenges facing humanity in our day.”

In June 2015, the Pope tweeted, “It is contrary to human dignity to cause animals to suffer or die needlessly.”

“By going plant-based for Lent, he would be leading the way to a more sustainable planet,” Butler adds. “Join us and fight climate change with diet change.”