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Mark Ruffalo
Mark Ruffalo is an Oscar-nominated actor and an advocate of addressing climate change and renewable energy. In March 2011, Mark co-founded Water Defense to raise awareness about energy extraction impact on water and public health. A regular contributor to the Guardian and Huffington Post, Mark is a recent recipient of the Global Green Millennium Award for Environmental Leadership, the Meera Gandhi Giving Back Foundation Award, and Riverkeeper's Big Fish Award. He was named one of Time Magazine's "People Who Mattered" in 2012.

Entries by Mark Ruffalo

To Fight Inequality, Turn On Clean Energy Everywhere

(48) Comments | Posted September 15, 2015 | 11:12 AM

As the nations of the world tackle the problem of inequality, remember this: clean energy is part of the solution.

Much of the world is still held captive by last century's dirty-energy system that has a long history of locking inequality into place, economically and politically. Look across the...

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Opening The Door To Solar Power For All

(216) Comments | Posted July 15, 2015 | 11:56 AM

For a long time, everybody thought of solar panels as something only rich people could afford. But when you think about it, the fuel -- sunlight -- is free. So if you can make the equipment affordable and accessible, in theory, solar should be a great option for all kinds...

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The Time to Save Our NYC Parks Is Now

(18) Comments | Posted June 4, 2015 | 10:50 PM

What makes a park a park?

Ordinarily, that might be a question for a New York dinner party. Today, it is an urgent legal question before the New York Court of Appeals. For our state's highest court will either save our city parks, by reaffirming a time-honored civic principle, or...

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President Obama Needs to Follow the Empire State's Leadership on Banning Fracking

(111) Comments | Posted January 8, 2015 | 4:37 PM

On December 17, a courageous act by New York Governor Andrew Cuomo to ban fracking in the state sent shockwaves around the world. Governor Cuomo followed acting State Health Commissioner Dr. Zucker's recommendation based on a significant and growing body of scientific studies showing that drilling and fracking put people's...

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The Science on Fracking Is In: Not One Well!

(162) Comments | Posted December 16, 2014 | 4:28 PM

While filming a new movie in London, I learned that the sole shale gas well in the nation -- just a few hours north of me -- has triggered two earthquakes, suffered a "structural integrity failure," and risked poisoning water supplies.

That's right: the only fracking well in the United...

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청정 재생에너지 100%를 향해

(0) Comments | Posted September 20, 2014 | 11:55 AM

미국 전역에 걸쳐 회사, 가정, 커뮤니티 구분 없이 자체생산 가능한 청정 재생에너지를 반기고 있다. 대기를 오염시키는 화석연료의 대안인 청정 재생에너지는 지금 당장 기후변화를 막을 수 있는 가장 현실적인 해법이다.

태양에너지와 풍력발전을 이용하기 시작한 GM, 월마트, 애플, 존슨엔존슨, 구글 같은 회사들은 이런 청정에너지가 사업차원에서도 유익하다는 것을 깨닫고 있다.

또 버지니아주, 네브라스카주,...

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Clean Energy Is a 100 Percent American Success Story

(122) Comments | Posted September 17, 2014 | 1:31 PM

Across the nation, American businesses, families, and communities are embracing clean, renewable energy that is homegrown, healthy, and can never run out. By finding alternatives to fossil fuels that pollute our air and disrupt our climate, they are showcasing the single most practical way to tackle climate change, starting now....

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We Are All Connected by Water: Our Elected Officials Must Be Held Accountable For Protecting This Natural Resource

(12) Comments | Posted April 22, 2014 | 10:55 AM

Easter Sunday, April 20, 2014 marked the four-year anniversary of the BP Deepwater Horizon oil spill ("BP Spill"). The BP spill should have been a wake-up call for elected officials and organizations tasked with responding to this type of disaster, but it seems like those in charge of protecting our...

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Fracking Exports Will Leave U.S. Communities in the Dark

(81) Comments | Posted April 2, 2014 | 4:49 PM

natural gas exports

Last month, thirty Senate Democrats -- members of the "climate caucus" -- stayed Up All Night on the Senate floor to speak out about climate change. This was an important moment to highlight the most critical environmental issue of our time. What was...

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Shining a Spotlight on Water Defenders

(6) Comments | Posted March 22, 2014 | 4:51 PM

For too long, we have paid little attention to our planet's most crucial natural resource: water. Sadly, most of what we hear is not great news -- massive contaminations, scarcity, areas of high stress and more. This isn't exactly reassuring when you consider that water is a precious resource on...

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The Global Drinking Water Crisis That Is Hitting Close to Your Home

(79) Comments | Posted February 21, 2014 | 6:02 PM

This week, I spent about 20 minutes on HuffPost Live chatting with Alyona Minkovski about the global crisis threatening drinking water. That phrase -- global crisis -- seems to desensitize people, unfortunately. When I tell you that one in five people around the world lacks access to safe...

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State of Our Fractured Union: 5 Things We'd Like to Hear From President Obama

(57) Comments | Posted January 27, 2014 | 4:43 PM

As President Obama prepares to deliver his State of the Union address, we sincerely hope his message on energy will be based on science, reflecting the very real climate crisis that currently vexes our great nation. In previous years, he has used his platform to promote his "all of the...

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Five Reasons to Join Us Tomorrow for the Global Frackdown

(57) Comments | Posted October 18, 2013 | 10:13 AM

This Saturday, thousands of people around the world will take action to ban fracking in their communities as part of Global Frackdown 2, the second international day of action to ban fracking. More than 200 actions will be taking place in more than 20 countries spanning six continents, all calling...

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Five Ways to Stop President Obama's Plan to Frack America

(420) Comments | Posted August 20, 2013 | 5:24 PM

When President Obama delivered his speech on climate change in June, we all welcomed his renewed focus on this crisis. While the broad narrative of his speech was something to rally around, his actual plan to solve the climate crisis is to drill and frack more aggressively than ever before....

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Don't Frack Illinois (or North Carolina, Georgia, Maryland, New York, Virginia, or Florida)

(214) Comments | Posted April 4, 2013 | 9:27 AM

Scientists and actors don't team up often, but as two New Yorkers deeply concerned about the dangers of shale gas extraction for our own state, we've been watching with growing alarm an unfolding drama one time zone away in Illinois where shale gas and oil fracking is under consideration by...

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Governor Cuomo: Not One Well!

(276) Comments | Posted February 11, 2013 | 8:30 PM

Last Monday, I dropped everything and headed off on yet another trip to our state's Capitol. Hoping to do my part to stop the dishonest and toxic gas industry from ravaging our beautiful state, I -- along with 500 other New Yorkers who had arose before dawn to board buses...

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Why I Support the Robin Hood Tax

(614) Comments | Posted June 18, 2012 | 7:26 PM

The story of how the financial crisis unfolded has been more dramatic than any Hollywood script. Unfettered by regulation, the financial alchemists of Wall Street lost touch with reality, creating an economic leviathan they could no longer control.

It tore through America, ripping chunks from our economy, triggering the biggest...

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"The Tesseract Is Here!"

(239) Comments | Posted June 11, 2012 | 8:20 PM

Coauthored by Mark Z. Jacobson

What happens when you put a movie scientist in a room with a real scientist?

In The Avengers movie, everyone is fighting over something called the Tesseract. It is a source of unlimited energy and whoever controls it is the winner. That...

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What's in Your Right Pocket?

(233) Comments | Posted February 2, 2012 | 7:46 AM

This post is part of a series on childhood poverty in the United States in partnership with Save the Children and Julianne Moore. Moore leads the organization's Valentine's Day campaign, through which cards are sold to support the fight against poverty in the U.S. To learn more or to purchase...

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Let's Keep Tap Water Safe From Fracking (Video)

(109) Comments | Posted June 8, 2011 | 11:44 AM

As a New Yorker who moved to the quiet countryside upstate a few years ago with my wife and three young children, I've been worried about fracking ever since I learned the word and heard this dangerous technology could be coming to town.

Where this risky gas drilling practice...

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