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

Climate change is not some distant problem we can deal with later or wait for someone else to solve.

I believe that we have a moral obligation to leave this planet better than we found it.

We are going to have to address the flooding issues.

I am proud of the progress we have made and am confident that it will serve as a foundation upon which our Nation can continue to meet the profound challenge of climate change.

These new standards for clothes washers, water heaters, residential heat pumps and central air conditioners, and commercial heating and cooling equipment are a critical part of our broader effort to address the greatest environmental challenge of the 21st century: global warming.

We have to create wealth with smaller and smaller amounts of greenhouse gas emissions.

I will continue to be very interested in the climate change area in particular.

This Earth Day, let us remember that we are only stewards, in our time, of the Earth God gave us for all time.

I want to challenge all of us to renew our commitment to protect and preserve God's precious gift to us, our earthly home.

Today I want to focus on the most critical environmental challenge we face in this new century, global warming.

Good morning, and happy Earth Day.

The real reason that the air-conditioning is not on tonight is that it's part of my continuing effort to convince the American people that Al Gore is right about global warming.

After this summer, I take it no one seriously questions the fact that the climate is genuinely changing.

We've got to face the environmental challenges of today and tomorrow.

I believe global warming is real.

100 percent of the people in this crowd believe there is global warming now.

The climate change/global warming issue is real.