He's sick of it.

The explosion also injured Rudaw TV's cameraman Younis Mustafa.

And I know what they're going to look like in X ray and I'm not far off.

If, God forbid, any of us left here tonight and sustained a concussion, most of us would go on to fully recover inside of a couple hours to a couple of weeks.

Today marks exactly six months and for the first time in history, not a single child has been paralyzed in Uttar Pradesh or Bihar.

In 1957, he was wounded in an assassination attempt, after which he went to Spain where he died from his wounds in 1959.

Now I thought that it was because I have this totally compelling helmet crusade, right, this epiphany of Tom's.

So I guess the world is insane, because I see entirely too much of doing the same things over and over again, hoping that this time it's not going to collapse upon us.

Pettengill was a 23 year old vet who had planned to make the army a career, but then he got a severe back injury in Iraq, and that forced him to take a medical discharge.

They could not imagine turning that choice over to another, even though having made that choice made them feel trapped, In a number of cases they were even clinically depressed.

When film critic Roger Ebert lost his lower jaw to cancer, he lost the ability to eat and speak. But he did not lose his voice. In a moving talk from TED2011, Ebert and his wife, Chaz, with friends Dean Ornish and John Hunter, come together to tell his remarkable story.