Yesterday, for the first time in human history, concentrations of carbon dioxide, the primary global warming pollutant, hit 400 parts per million in our planet's atmosphere. This number is a reminder that for the last 150 years -- and especially over the last several decades -- we have been recklessly...

In my new book, The Future: Six Drivers of Global Change, I highlight the problem of increasing income inequality that is plaguing the societies of almost every industrialized country in the world. Despite being the richest country in the world, the United States also suffers from one of...

President Obama today announced his choices to lead the Department of Energy, the Environmental Protection Agency, and the Office of Management and Budget.

I congratulate both Ernest Moniz and Gina McCarthy on their nominations to head the DOE and EPA, respectively. I know and highly respect both and I wish...

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Une nouvelle étude de l'Institut national du cancer a révélé que la formation du Tea Party (mouvement politique opposé à toute forme d'impôts qui serait apparu spontanément après la crise de 2008, ndlr) était...

A new study funded by the National Cancer Institute of the National Institutes of Health reveals that the Tea Party Movement was planned over a decade ago by groups with ties to the tobacco and fossil fuel industries. The movement was not a spontaneous populist uprising, but rather...

Tonight's State of the Union Address represents an excellent opportunity for President Obama to build upon his actions in his first term to solve the climate crisis and reclaim American leadership on this most crucial challenge. During his first four years, President Obama oversaw unprecedented investments in clean energy, improved...

Almost a decade ago, someone asked me a question, "What are the drivers of global change?" I've spent a lot of time over the last eight years thinking about it, and have dedicated much of the last two years to researching, writing and refining my conclusions. The result is my...

This past week, the New York Times announced the closure of their environmental desk. Along with many, I am sorry to see this team disbanded; over the last several years they have consistently provided high-quality reporting on critical environmental issues, especially the climate crisis. Newspapers generally are under economic stress,...

This week, our nation has anxiously watched as Hurricane Sandy lashed the East Coast and caused widespread damage -- affecting millions. Now more than ever, our neighbors need our help. Please consider donating or volunteering for your local aid organizations.

The images of Sandy's flooding brought back memories of a...

Today's media environment is a challenging one. Between blogs, social media, 24-hour cable news and endless propaganda campaigns from political organizations, making your message stand out is difficult. In his fascinating new book, Language Intelligence, Joe Romm from Climate Progress lays out the keys to persuasive writing, and speaking.

"In...

Paul Ryan, Mitt Romney's new running mate, has a history of anti-climate science statements and votes, according to Brad Johnson:

Rep. Paul Ryan (R-WI), Mitt Romney's vice-presidential pick, is a virulent denier of climate science, with a voting record to match.

A favorite of the Koch brothers,...

The U.S. Department of Agriculture has named over 1,000 counties in 26 states as disaster areas -- the largest declaration in history -- as a result of the recent drought, wildfires and other extreme weather events threatening agriculture and many other industries across the entire country. As scientists have told...

In 1994, I was asked by Rachel Carson's publisher to write the introduction for the 30th anniversary edition of Silent Spring. It was, of course, a privilege and honor. Here is part of what I wrote:

Writing about Silent Spring is a humbling experience for an elected official,because Rachel Carson's...

Earlier this month, Generation Investment Management, a firm I co-founded along with David Blood, released a white paper on the importance of sustainable capitalism. The white paper defines Sustainable Capitalism as a framework that seeks to maximize long-term economic value creation by reforming markets to address the real needs of...

Today, our journey takes us to Neko Harbor, one of the prime locations in this region to view glaciers. These towering walls of ice are a majestic sight, and a humbling reminder of the fragility of the natural systems that human beings depend upon for life as we know it.

Today we visit the Weddell Sea, which lies to the east of the Antarctic Peninsula. Like the rest of the Southern Ocean, the body of water that surrounds Antarctica, it is home to diverse ecosystems that are filled with unique and astonishing wildlife. And like oceans everywhere, the impacts of...

After crossing the legendary Drake Passage, we came in sight of the Antarctic continent. It is a majestic, otherworldly place. The Antarctic Peninsula, which juts northward toward South America, is lined with ice-covered mountains and surrounded by abundant wildlife in the sea. But even on this continent that looks and...

Last September, millions of you joined us for 24 Hours of Reality, when we connected the dots between the extreme weather events happening all over the world and the reality of the climate crisis. Together, we saw that we don't need to travel far to see the impacts of climate...

President Obama made the right call last week when he decided to reject the tar sands pipeline. The State Department, in its Congressional Report, debunked the myth that this disastrous project would benefit the US:

Regarding economic, energy security, and trade factors, the economic analysis in the final...

Thousands of protestors surrounded the White House last weekend demanding Barack Obama block the tars sands pipeline because of its implications for worsening the climate crisis:

Thousands of protesters gathered in Lafayette Square across from the White House on Sunday to oppose a plan for...