The issue of climate change is one that we ignore at our own peril. There may still be disputes about exactly how much we're contributing to the warming of the earth's atmosphere and how much is naturally occurring, but what we can be scientifically certain of is that our continued use of fossil fuels is pushing us to a point of no return. And unless we free ourselves from a dependence on these fossil fuels and chart a new course on energy in this country, we are condemning future generations to global catastrophe.

I will sign a universal health-care bill into law by the end of my first term as president that will cover every American and cut the cost of a typical family’s premium by up to $2,500 a year.

The capacity of Iraq's security forces has improved, and Iraq's leaders have made strides toward political accommodation

As I got older, then my particular ambitions started cohering around creating a world in which people of different races or backgrounds or faiths can recognize each other's humanity, or creating a world in which every kid, regardless of their background, can strive and achieve and fulfill their potential.

There have been periods where the folks who were already here suddenly say, 'Well, I don't want those folks,' even though the only people who have the right to say that are some Native Americans.

Our country was born out of a desire to be free. And every day since, it's been protected by our men and women in uniform - people who believed so deeply in America, they were willing to give their lives for it.

The path towards sustainable energy sources will be long and sometimes difficult. But America cannot resist this transition, we must lead it. We cannot cede to other nations the technology that will power new jobs and new industries, we must claim its promise. That's how we will maintain our economic vitality and our national treasure-our forests and waterways, our crop lands and snow-capped peaks. That is how we will preserve our planet, commanded to our care by God. That's what will lend meaning to the creed our fathers once declared.