[TED 영어공부]Patience Mthunzi: Could we cure HIV with lasers? 0:11What do you do when you have a headache? You swallow an aspirin. But for this pill to get to your head, where the pain is, it goes through your stomach, intestines and various other organs first.0:27Swallowing pills is the most effective and painless way of delivering any medication in the body. The downside, though, is that swallowi..

0:11For the past decade, I've been studying non-state armed groups: armed organizations like terrorists, insurgents or militias. I document what these groups do when they're not shooting. My goal is to better understand these violent actors and to study ways to encourage transition from violent engagement to nonviolent confrontation. I work in the field, in the policy world and in the library.0:..

0:11So on my way here, the passenger next to me and I had a very interesting conversation during my flight. He told me, "It seems like the United States has run out of jobs, because they're just making some up: cat psychologist, dog whisperer, tornado chaser."0:33A couple of seconds later, he asked me, "So what do you do?"0:38And I was like, "Peacebuilder?" (Laughter)0:45Every day, I work to amp..

0:12This is a map of New York State that was made in 1937 by the General Drafting Company. It's an extremely famous map among cartography nerds, because down here at the bottom of the Catskill Mountains, there is a little town called Roscoe -- actually, this will go easier if I just put it up here -- There's Roscoe, and then right above Roscoe is Rockland, New York, and then right above that is ..

0:12Imagine a place where your neighbors greet your children by name; a place with splendid vistas; a place where you can drive just 20 minutes and put your sailboat on the water. It's a seductive place, isn't it?0:31I don't live there. (Laughter) But I did journey on a 27,000-mile trip for two years, to the fastest-growing and whitest counties in America.0:49What is a Whitopia? I define Whitopi..

0:12Along the ancient path of the Monongahela River, Braddock, Pennsylvania sits in the eastern region of Allegheny County, approximately nine miles outside of Pittsburgh.0:27An industrial suburb, Braddock is home to Andrew Carnegie's first steel mill, the Edgar Thomson Works. Operating since 1875, it is the last functioning steel mill in the region. For 12 years, I have produced collaborative p..