That is the America I want to lead as President.

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

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.

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

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

We can't afford to wait any longer.

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

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

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.

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

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

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

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

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.

It is time the world could point to America again.

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.

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