5 Celebrities You Didn't Know Were Environmental Activists

Leonardo DiCaprio has used his fame to raise awareness about the environment for years, even dedicating a part of his Oscars speech to emphasize the importance of taking climate change seriously. 

But luckily, Leo isn't the only one using his high-profile platform for good. Many other celebs are working hard to bring attention to this vital issue that impacts all of our lives. Here are some of our fave celebs that you'll love even more for being environmental activists. 

If you've ever seen Kristen Bell profess her adoration for sloths, it actually shouldn't come as that big of a surprise that she's an animal lover and a lover of pretty much all of Earth's wonders. Naturally, the Frozen actress does her part to help protect the planet. She has been a vegan and a vegetarian, has been a major proponent of water conservation, recycling, and living an all-around green lifestyle. We didn't think it was possible, but Kristen just keeps getting cooler and cooler.

It seems like being an environmental activist is a major part of Mark Ruffalo's identity. In fact, the Spotlight actor's Twitter bio reads, "I'm a husband, father, actor, director, and a climate change advocate with an eye on a better, brighter, cleaner, more hopeful future for all of us." So if you follow Mark, you'll learn a lot about the dangers of pollution and other environmental issues. Mark founded Water Defense, a non-profit that is dedicated to making sure everyone has access to clean water. He is also on the board of directors of The Solutions Project, which works to transition the United States into using 100 percent clean, renewable energy, and is a member of the advisory board for Americans Against Fracking. With his busy acting career, we're not sure how Mark finds the time to do all of that, but we're sure glad he does.

Olivia Wilde proves that living a conscious lifestyle is as easy as deciding what to put in your closet. The Vinyl actress co-founded the conscious creative agency and incubator Conscious Commerce and is the spokesperson for H&M's Conscious Exclusive collection. She has also spoken out about global warming and animal rights in the past. Here's hoping she's passing along these ideals to her soon-to-be two children.

Clearly, the planet is one of the things that makes Pharrell Williams "happy." The singer is the creative director of Bionic Yarn, a company that creates textiles out of recycled plastic. The company partnered with G-Star RAW to launch a line of denim made using recycled plastic that is reclaimed from the ocean called RAW for the Oceans in 2014. Last year, the singer and former Vice President Al Gore unveiled plans to stage Live Earth, a worldwide concert event to raise awareness for climate change. Though Live Earth was originally supposed to take place on June 18, 2015, it was eventually delayed, but we're still keeping hope alive that it happens in the future.

It seems like Cate Blanchett has served up perfect performances in a wide variety of roles over the years, and you can also add environmental activist to her resume. The two-time Oscar-winning actress helped implement the installation of solar panels and a rainwater harvesting system to recycle and reuse rainwater at The Wharf, the home of the Sydney Theatre Company, when she was the organization's co-artistic director in 2011. That same year, she starred in a commercial in support of the Australian government's proposed tax on major polluters in an effort to curb carbon emissions. She also reportedly had several green features in her Sydney residence, such as a greywater recycling system and solar panelling. Cate makes being green look so good.

Watch another famous activist, James Cameron, talk about his passion for the environment and how it inspired one of his biggest blockbusters, below.

James Cameron - Environment