There's a possibility of war.

Aren't you worried that Tom might get injured?

And I'm going to show you one beautiful possibility towards the end of this talk.

There's a definition of leadership which says, It's the ability to use the smallest possible crisis for the biggest possible effect.

There are at least three possibilities One possibility is that, as I gain weight, it causes you to gain weight.

You probably also know that she has spent 15 of the last 20 years imprisoned for her efforts to bring about democracy.

In conclusion, nuclear war is less likely than before, but by no means out of the question, and it's not survivable.

Think about the possibility, why is it that iPhones and iPads advance far faster than the health tools that are available to you to help take care of your family?

Our studies have found that there is a 42 percent probability of one's blood oxygen going up by one percent if one stays indoors in this building for 10 hours.

Another possibility, very obvious, is homophily, or, birds of a feather flock together here, I form my tie to you because you and I share a similar body size.

You actually see a great potential, but you see a lot of people who are sort of defending their turf, and may actually be very resistant, when one tries to introduce ideas.

This here shows, on the Y axis, the increase in the probability that a person is obese given that a social contact of theirs is obese and, on the X axis, the degrees of separation between the two people.

We are studying the tolerances of the materials that you use to build the structure of your expression your speeches and your writing. And then, often people say to me, Well, OK, how do I know that this word is real?

But once again, if you look at that measure of child well being, in relation to national income per person, there's no relationship, no suggestion of a relationship.

He won't call himself an atheist because it's, in principle, impossible to prove a negative, but agnostic on its own might suggest that God's existence was therefore on equal terms of likelihood as his non existence.

Now, if you watch nine and a half years of television no sleep, no potty breaks and you saw loss after loss after loss, and then at the end there's 30 seconds of, and I won, the likelihood that you would play the lottery is very small.

In 2007, as the world worried about a possible avian flu epidemic, Laurie Garrett, author of The Coming Plague, gave this powerful talk to a small TED University audience. Her insights from past pandemics are suddenly more relevant than ever.

If we lead lives where we consciously leave the lightest possible ecological footprints, if we buy the things that are ethical for us to buy and don't buy the things that are not, we can change the world overnight.

We're going to be up there in just a few more weeks, and we expect that it's probably retreated another half a mile, but if I got there and discovered that it had collapsed and it was five miles further back, I wouldn't be the least bit surprised.