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

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 are still Earth's best hope.

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

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

That is the America I want to lead as President.

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

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

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

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

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