The leading question about climate change is a question of costs. No one disputes that climate change will be expensive.

Where advocates argue we need to pay now, climate delayers argue we should wait and pay later. As a consequence, where sides diverge on timing, they share a common...

The state of Maine is in a state of gubernatorial uncertainty: a recent poll shows Paul LePage (R) faltering, with Eliot Cutler (I) rising. Candidates are calling, and people are wondering who to vote for. The answer to that question doesn't begin in the...

For some, it was with a sense of relief that Interior Secretary Ken Salazar passed Cape Wind, the beleaguered offshore wind project on Cape Cod. For others, it was the latest in a drama that has lasted nearly a decade.

While the environment remains a low priority issue to...

Now that Sarah Palin has announced her resignation as Governor of Alaska, you may wonder: What has she been doing? How will she fill her time? In an Op-Ed piece for The Washington Post, Palin kindly provided an answer. She's committed herself to a single task: confusing the American...

Driving many conversations on energy and climate is a single question: What will the future look like?

Even if you're not interested in the environment, you've asked a similar question before. If you've ever wondered what the weather will be over your vacation, if you've ever filled out a sports...

As the markets have gone down, long-held assumptions have been thrown up into the air. Economic theories, and not just the value of our homes and our retirement accounts, are coming undone. In some cases, that may just be a good thing.

Consider the argument that climate change solutions,...

I went to bed last night with Oxford covered in a thin, quiet blanket of snow. I woke up to find the country in chaos.

The Telegraph ran a headline saying, "Britain paralyzed by worst snowfall for 20 years." Meanwhile, the usually reserved Times of London reported: "Chaos...

Imagine, if you will, a story. In this story most of the characters are mute. The threats are abstract, the timeline long, the stakes high and the consequences still uncertain. Politics are present, and so, too, are heaps of money. There are enemies, but no battlefield. There is no climax....

With an eye on the next US administration, and on international climate policy, two things are clear.

The world needs US leadership on climate change. The US is now poised to become that leader.

In his transition, President-elect Barack Obama has pledged that his administration will mark a...

I'd like to make a simple argument: that our world's cities must play a vital role in the fight against climate change. Indeed, I think they already do.

But first, let's put the progress of our world's cities into perspective.

In 1900, only 160 million people, or one tenth of...

It happened quickly, and almost silently, but today the United States entered a new era of leadership on energy and climate.

In a video addressed to the more than 600 leaders convened in Los Angeles for the opening sessions of the Global Climate Summit, President-elect Barack Obama...

As a country, we are between celebrations. We have yet to finish our Halloween candy. We have yet to chose our next president.

On Halloween, we have come to celebrate the wicked over the wise. But it is in the historical fabric of the holiday that Halloween be a night...

On November 4th, Americans will cast their vote for our next President. In doing so, they will cast a vote for a candidate not on the ballot -- America's next environment.

In this election, national environmental discussions have focused on energy independence over climate change, and on the risks of...

If you're anything like me, you've landed in Denver. The weather is perfect, and the mountains unlike anything back home.

On the Sunday before the official start of the Democratic scrum, you're most likely planning the week. Where do I eat? How I rent one of those bikes? How can...

Last time the Democrats came to Denver, the powerbrokers drove electric-gasoline hybrid cars. Thousands of trees were given away. Snow was trucked in by horse and carriage to cool the convention center. And the candidate - the candidate stayed home to harvest his alfalfa crop.

Sound like the eco-conscious convention...

With Senator Barack Obama set to announce his VP nomination by Friday, the speculative field of possible names has been whittled - if only by the press - to a select three: Senator Joseph Biden of Delaware, Senator Evan Bayh of Indiana, and Governor Tim Kaine of Virginia. Two...