Abstract leafs care vector logo icon. Eco icon with green leafIn honor of World Humanitarian Day this August 19, check out these celebrities who are making a difference for our planet. Many of these celebrities have had personal experiences with environmental destruction, and now they're doing their part to make a change for future generations. Remember, you don't have to be a celebrity to make a difference for our planet. Follow our energy saving tips and a few changes will go a long way.

Leonardo DiCaprio

Since his Titanic days, Leonardo DiCaprio has been a strong environmental activist. The Leonardo DiCaprio Foundation started in 1998 and works in four key areas: protecting biodiversity, oceans conservation, wildlands conservation and climate change. In 2015 DiCaprio starred in The Revenant, a film about a frontiersman surviving a brutal winter in the 1820s. In his Academy Awards acceptance speech, he explained the cast and crew needed to go to the southernmost tip of the planet just to find snow. DiCaprio said 2015 was the hottest year in recorded history, and climate change is the biggest threat to humanity.

Mark Ruffalo

You may know Mark Ruffalo from his performance in Spotlight, but he is also the founder of Water Defense, a nonprofit dedicated to making sure everyone has access to clean water. The organization's mission is to use technology and public engagement to keep waterways and drinking water sources free from contamination and industrial degradation. Ruffalo is also on the Board of Directors for The Solutions Project, which focuses on the global transition to 100% clean energy.

Gisele Bundchen

Growing up in Brazil, Gisele Bundchen saw rainforest destruction firsthand. In May 2009, she co-hosted the Rainforest Alliance's annual gala to honor leaders in sustainability. Harvard Medical School gave her the Global Environmental Citizen Award in 2011, honoring her contributions to spreading awareness about the importance of protecting our planet. In 2014, she became a board member for the alliance. Bundchen created an eco-friendly flip-flop line to raise funds for preserving forests and improving water systems in the Amazon.

Matt Damon

While filming Running the Sahara in 2006, Matt Damon saw the global water crisis firsthand. He became a leader of Water.org, an international nonprofit that focuses on creating sustainable solutions to the water crisis in Africa, South Asia, South America and Central America. The group has a vision that everyone in the world can take a safe drink of water and have access to a toilet.

Cate Blanchett

Cate Blanchett is an ambassador for the Australian Conservation Foundation, a group dedicated to creating a healthy environment through research and community outreach. Blanchett was a spokesperson for the foundation with its Who on Earth Cares program. She also campaigned for a carbon tax aimed at big industries in Australia, encouraging them to cut back on emissions.

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