We are still Earth's best hope.

He's the only candidate in this race who has the ability to unite people for real change in our energy policy.

Today I want to lay out the second part of my plan - a set of proposals that will allow America to lead the world in combating global climate change.

I will personally reach out to the leaders of the biggest carbon emitting nations.

Global warming is not a someday problem, it is now.

Leadership isn't about telling people what they want to hear - it's about telling them what they need to hear.

I would not be running for President if I didn't believe that this time could be different.

Solving our global warming problem is the moral, business, policy and political challenge of our generation.

Make no mistake - developing the next generation of energy will be one of the greatest challenges that this generation of Americans will ever face.

We can't afford the same kind of caution when the future of our security is at stake.

There's no more pressing challenge facing our country than the threat of climate change.

It’s time to make the cleaner way of doing business the more profitable way of doing business.

When it comes to the issue that will determine the very future of life on this Earth, we are still Earth's best hope.

We will also explore safer ways to use nuclear power, which right now accounts for more than 70% of our non-carbon generated electricity.

Believe me, the production people can do it if they really try.

Global warming is a grave and growing threat to our national security.

And if we act now and we act boldly, it doesn't have to be.

We will start by dramatically improving the efficiency of our buildings, which currently account for nearly half of all carbon emissions in America today.

I want the leaders of Europe and Asia; of Africa and South America to point to our diplomacy and our engagement and our ingenuity as the light that led us toward a new energy future in our time.

We can't afford to wait any longer.

I will let them know that America is up to the challenge.

I know that change makes for good campaign rhetoric, the word change on a bumper sticker. But, when these same people actually had a chance to make change happen, they didn't lead.

It's not enough to lay a wreath on Memorial Day, or to make a speech on Veteran's Day.

As President, I won't stand for hundreds of thousands of veterans waiting for benefits.

When a veteran is denied health care, we are all dishonored.