Here's the truth: even if countries like the United States curb our emissions, if growing countries like India - with soaring energy needs - don't also embrace cleaner fuels, then we don't stand a chance against climate change.

The peaceful transition of power is one of the hallmarks of our democracy.

You don't need to see my birth certificate, or my college records, or my legal writings, or... anything.

By 2025 we expect new spacecraft designed for long journeys to allow us to begin the first ever crewed missions beyond the Moon into deep space. So we'll start by sending astronauts to an asteroid for the first time in history. By the mid-2030s I believe we can send humans to orbit Mars and return them safely to Earth. And a landing on Mars will follow and I expect to be around in see it.

The American people are a non-ideological people. They very much are looking for common-sense, practical solutions to the problems that they face. Oftentimes they've got contradictory senses of various issues and policy positions and I don't think that either the Republican Party or the Democratic Party necessarily capture their deepest dreams when those parties are described in caricature or in policy terms.

We want our children to live in an America that isn't burdened by debt, that isn't weakened by inequality, that isn't threatened by the destructive power of a warming planet.

All of us - we should do everything we can to make sure this country lives up to our children's expectations.