Global warming is one of the greatest challenges of our generation. Addressing this challenge also represents enormous opportunities for economic recovery and long term prosperity.

But sometimes the big picture is lost when just a part of the story is told.

That's just what happened when Douglas Elmendorf,...

Sarah Palin's "cap and tax" opinion piece printed in the Washington Post this week reminds me of every naysayer who has spoken out against progress in cleaning up pollution.

Whether it was the debate over the Clean Air Act, the Clean Water Act, the Superfund law or any...

Women make up 51% of our nation's population.

Yet only 17% of the seats in Congress are held by women. Only 3% of corporate CEOs are women. And just one out of nine Supreme Court justices is a woman.

President Obama can change that.

Since Sandra Day O'Connor's retirement from...

Tuesday, as I watched Barack Obama be sworn into office as our 44th President of the United States, I was overwhelmed with pride and emotion, and reminded of what is best about this country.

As someone who lived through the civil rights movement and saw African-Americans shunted...

Two days ago, as two of our country's biggest investment houses stood on the brink of failure, Senator John McCain told an audience in Florida that the "fundamentals of the economy are strong."

It sent cold shivers down my spine.

The fundamentals of our economy are not strong.

People...

You have heard me say many times that this administration has downplayed the dangers posed by global warming. They have used every excuse to avoid taking action, even hiding behind China and India.

Now, thanks to a very brave former EPA official, Jason Burnett, we know that the administration's...

One of the most basic tenets of our freedom is justice, and at the heart of justice lies the search for truth.

Throughout history, whenever the United States government has violated the trust of the American people, we have always worked to regain that trust by seeking the truth and...

Today, at gas stations across the nation, the American people are paying the price for a failed energy policy.

But faced this week with the opportunity to actually do something to address high gas prices, invest in alternatives and move toward energy independence, Republicans in the...

Today, the U.S. Senate begins debate on the Climate Security Act, a critical bill that will address the global warming crisis head-on. After many months of committee hearings and testimony, our bill has finally reached the Senate floor. It's a day we've been waiting for a long time.

The...

Earlier this week, General David Petraeus and Iraq Ambassador Ryan Crocker appeared before the Senate Foreign Relations Committee to deliver their report on the war in Iraq. It was a very somber hearing, and I did my best to convey our strong opposition to the President's war in Iraq.

To...

Just when you thought it was safe to start thinking about having a Democrat in the White House, along comes a cynical power grab by Republican operatives. And unfortunately, it's happening right here in my own state of California.

If you haven't heard already, Republican strategists recently announced plans to...