Today is Earth Day, and while we already celebrated with a look at our picks for Girth Day (celebs with the most hung cocks) it only seems fair to also celebrate celebs who have actually contributed to environmental causes. The men on this list are both actors and leading environmental activists, and they make caring for the planet look damn sexy!

So to properly celebrate Earth Day, we're roundup up the sexiest environmental activists to ever get nude on screen starting with Leonardo DiCaprio. In 1998 he started the Leonardo DiCaprio Foundation, which has awarded over $100 million in grants to initiatives that"protect vulnerable wildlife from extinction while restoring balance to threatened ecosystems and communities." We saw his yummy pink sac in 1994's Total Eclipse.

Sexiest Environmental Activists Go Naked!

It goes without saying that Ben Affleck cares way more about the environment than he does about Jennifer Garner. This hunk co-founded the Eastern Congo Initiative, which teaches people how to live sustainably with the environment. Advocating for the environment is nothing if not Big Dick Energy, and we saw Ben's BDE in 2014's Gone Girl during a completely gratuitous shower scene. He didn't need to flash his really big and really smooth penis, but he did, and the world is better for it!

Sexiest Environmental Activists Go Naked!

Scruffy daddy Mark Ruffalo knows that if we don't have a planet, we'll have no place to see his sexy hairy body. He brought pollution in Los Angeles into focus with his "Toxic Tours" focusing on oil drilling. Talking about things we'd like to drill, here's Mark's perfect penis in 2003's In The Cut.

Sexiest Environmental Activists Go Naked!

Edward Norton has been an environmental activist for decades, and recently called out Hollywood for its controversial use of gas-guzzling private planes, stating "Every TV and film studio — indeed every major media conglomerate — should take the easy step of quantifying the air travel undertaken not only by their executive teams but of all the productions they mount, and then directly purchasing verified REDD+ carbon credits from projects all over the world to offset that air travel." Practice what you preach, Hollywood! You can catch a glimpse of Edward Norton's sexy penis in this unfortunately very brutal scene from 1998's American History X. This nude scene is best appreciated in picture form, NGL!

Sexiest Environmental Activists Go Naked!

Pierce Brosnan was more shaken than stirred when he caught wind of Iceland's illegal whaling industry. His involvement in puttingthe practice to a stop nabbed Brosnan a spot in Chicago's Environmental Hall of Fame, but his passion for the environment also extends to projects in California, Mexico, and beyond. Brosnan's epic bush was visible during his sexy scene in 1986'sNomads.

Sexiest Environmental Activists Go Naked!

Uh oh, I'm getting a carboner!