When you're going through an emotional experience and you're focussed completely on what's happening, you can't even spare any attention that the camera's there.

Incredibly, while these 18 to 20 year-olds cannot legally buy a beer, cannot purchase a bottle of wine and cannot order a drink in a bar, right now they can walk into any gun shop, any pawn shop, any gun show, anywhere in America and buy a handgun.

When it comes to climate, we can all make a big difference. At the most basic level, don't let denial go unchallenged and win the conversation on climate.

We face the gravest threat that civilization has ever confronted. It's global in nature and requires a global solution. Increased CO2 emissions anywhere, whether from China or the United States or from one of the countries that is burning its forests like Brazil or Indonesia.

Well-established theories collapse under the weight of new facts and observations which cannot be explained, and then accumulate to the point where the once useful theory is clearly obsolete.

George Orwell once wrote that a false belief sooner or later collides with physical reality, usually on a battlefield.

During my service in the United States Congress, I took the initiative in creating the Internet. I took the initiative in moving forward a whole range of initiatives that have proven to be important to our country's economic growth and environmental protection, improvements in our educational system.