In a powerful address at the Raising Hope climate conference near Rome, Pope Leo XIV delivered his first major statement on climate change, condemning those who downplay the ‘increasingly evident’ impacts of global warming. Echoing the sentiments of his predecessor, Pope Francis, the new Pontiff criticized individuals who ‘ridicule those who speak of global warming,’ a remark widely interpreted as a veiled critique of U.S. President Donald Trump. The President recently dismissed climate change as a ‘con’ and labeled renewable energy efforts as misguided. Speaking at Castel Gondolfo, Pope Leo emphasized the urgent need for global citizens to take decisive action, warning against indifference and resignation. His speech marked the 10th anniversary of the publication of *Laudato Si’*, a landmark document by Pope Francis that positioned climate change as a central concern for the Catholic Church. The Pope expressed concern that climate change has become a divisive issue, with some mocking its undeniable signs and even blaming the poor for its consequences. He urged citizens to pressure politicians into prioritizing environmental action, stating that only through active engagement can the damage to the planet be mitigated. The conference, held ahead of COP30 in Belém, Brazil, also featured former California Governor Arnold Schwarzenegger, who praised the Pope as a real-world ‘action hero’ for his commitment to installing solar panels on Vatican buildings. Brazilian Environment Minister Marina Silva extended an invitation to Pope Leo to attend COP30, expressing confidence that his presence would ensure the summit’s success. The Pope’s remarks underscored the moral imperative of addressing climate change, reminding the audience that future generations will judge humanity’s stewardship of the Earth.