Concentration of greenhouse gases, especially CO2, have increased substantially since the beginning of the industrial revolution. And the National Academy of Sciences indicates that the increase is due in large part to human activity.

Before history is written down in books, it is written in courage.

The law I sign today directs new funds and new focus to the task of collecting vital intelligence on terrorist threats and on weapons of mass production.

Humor can be a great way to lift spirits and relate with soon-to-be high school grads. Whether you're in need of a funny senior year quote for a card, your yearbook, or a gift, you can use this list of funny graduation quotes by famous leaders and comedians to get inspired. To those of you who received honors, awards and distinctions, I say well done. And to the C students, I say you too may one day be president of the United States.

History will prove me right. This is an exercise in folly.

People should be allowed to express their opinion. But, Americans need to know I'll be making up my mind based upon the latest intelligence and how best to protect our own country, plus our friends and allies.

We want more people owning things in this country. Let me put it to you bluntly: In a changing world, we want more people to have control over your own life.