Words are powerful, especially when they come from influential people. When people in positions of power speak, the public listens that much closer to what they have to say and pay more attention to the subject that they’re talking about. For years, Leonardo Di Caprio, a famous Hollywood actor, was one of the sole celebrities who used his popularity to bring attention to climate change and other environmental issues. Using his status to draw attention to this crucial subject matter spurred on more and more people engaging with the subject and supporting efforts to fight back against global warming. Here are just a few of those influential people and what they had to say on the matter.


  • “Climate change is real. It is happening right now, it is the most urgent threat facing our entire species and we need to work collectively together and stop procrastinating.” — Leonardo Di Caprio, Actor and Environmentalist

  • “One thing leads to the other. Deforestation leads to climate change, which leads to ecosystem losses, which negatively impacts our livelihoods – it’s a vicious cycle.” — Gisele Bundchen, Supermodel and UN Goodwill Ambassador

  • “Climate change is the greatest threat to our existence in our short history on this planet. Nobody’s going to buy their way out of its effects.” — Mark Ruffalo, Actor and Environmentalist

  • “I hope to use my celebrity to motivate people and contribute to moving our global society back from the brink. I am surprised environment is not at the top of the agenda. What is more important than good and clean air?” — Don Cheadle, Actor and UN Environment Goodwill Ambassador

  • “We don’t have time to sit on our hands as our planet burns. For young people, climate change is bigger than election or re-election. It’s life or death.” — Alexandria Ocasio-Cortez, U.S. Politician and Activist

  • “Climate change knows no borders. It will not stop before the Pacific Islands and the whole of the international community here has to shoulder a responsibility to bring about sustainable development.” — Angela Merkel, Chancellor of Germany

  • “Climate change is the single greatest threat to a sustainable future but, at the same time, addressing the climate challenge presents a golden opportunity to promote prosperity, security and a brighter future for all.” — Ban Ki-Moon, Secretary-General of the UN

  • “The time for seeking global solutions is running out. We can find suitable solutions only if we act together and in agreement.” — Pope Francis, 266th Catholic Pope