I know that the politics around trade can be very difficult - especially in an election year.

I said that America’s role would be limited; that we would not put ground troops into Libya; that we would focus our unique capabilities on the front end of the operation and that we would transfer responsibility to our allies and partners.

Most people who meet my wife quickly conclude that she is remarkable. They are right about this. She is smart, funny and thoroughly charming... Often, after hearing her speak at some function or working with her on a project, people will approach me and say something to the effect of "You know, I think the world of you, Barack, but your wife... wow!"

If we are not serious about facts and what's true and what's not. And particularly in an age of social media where so many people are getting their information in sound bites and snippets off their phones, if we can't discriminate between serious arguments and propaganda, then we have problems.

What is true is [Bashar] Assad got rid of his chemical weapons.

I don't want to make decisions about what I'm eating or wearing. Because I have too many other decisions to make.

Today, more than ever before, science holds the key to our survival as a planet and our security and prosperity as a nation. It's time we once again put science at the top of our agenda and work to restore America's place as the world leader in science and technology.