There are many slums in Mexico.

It is not the case that slums undermine prosperity, not the working slums they help create prosperity.

Kibera is one of Africa's largest slums.

There are a lot of slums in Mexico.

These slums are a disgrace to the city.

So there are schools in slums like this.

This innovation is from the slums of Rio.

What are you doing back here in the slums?

It's a remarkable comment on slums, poverty and aspiration.

They're private schools. There are no state schools in slums.

That's one billion people in the world live in slums.

In the urban slums, the girls tend to stay away.

Our first school was on a rooftop of a building inside the slums, a second story building, the only second story building inside the slums.

This is Kibera, Kenya, one of the largest slums of Africa.

The first thing that we did was walk through the slums.

Now, Mathare Valley is one of the oldest slums in Africa.

Bring infrastructure to the favelas, to the slums, wherever you are.

Social capital in the slums is at its most urban and dense.

He was born in a slum. Slums are breeding grounds for criminals.

These slums are the breading ground for disease, crime, illiteracy, and over population.

We walked through these slums, identified houses where children would never go to school.

There is also this myth that children from the slums cannot integrate with mainstream.

I was with my friend Susan Meiselas, the photographer, in the Mathare Valley slums.

It's no secret that children from slums are potential menaces to society. I think...

But they know there is this myth that children from the slums cannot speak English well.

You know, by the way, there are two million people in Bangalore, who live in 800 slums.

We couldn't go to all the slums, but we tried to cover as much as we could.

Even in the slums of India more than 50 percent of urban kids are going into private schools.

So in a town like Mumbai, which is half slums, it's 1 6th of the GDP of India.

45 percent of the 14 million people who live in Delhi live in unauthorized slums, which are chronically overcrowded.

In six years now, we have four schools, one junior college, 1,100 children coming from 28 slums and four orphanages.

It has to do with the favelas, the slums whatever you call it, there are different names all over the world.

And these vaccinators, these volunteers, they have got to dive headlong into some of the toughest, densest urban slums in the world.

And together they started a book club for a hundred people in the slums, and they're reading many TED authors and liking it.

He was actually living in the Kibera slums when his father called him and told him about Artemisia and the value add potential.

One big difference in the villages, as opposed to the urban slums there were more girls than boys who came to the kiosk.

That's why in June of this year, we passed, as a species, 51 percent of us living in cities, and bustees, and slums, and shantytowns.

There is also this myth that parents from the slums are not interested in their children going to school they'd much rather put them to work.

I didn't grow up in the slums or anything that dire, but I know what it is to grow up without having money, or being able to support family.

Have you considered the money spent on world war II you could have wiped out the slums all over the world, educated people, built the best universities free of charge.

I bring to you a message from tens of thousands of people in the villages, in the slums, in the hinterland of the country who have solved problems through their own genius, without any outside help.

And he spent the last 10 years of his life in two places only, the slums and the state prison, where he spent the last two years before he ended up sitting on this rock there.

From Kenya to Columbia, from Iraq to Korea, in slums, in schools, in prisons and in theatres, every day, people gather at TEDx events around the world to hear the best ideas bubbling up in their communities.

And the reason these young guys told me that they're doing these TEDx's is because they were sick and tired of the only workshops coming to the slums being those workshops focused on HlV, or at best, microfinance.

I drove past the slums of Bombay, as you always do, and I saw lines and lines in the hot midday sun of women and children with buckets waiting for a tanker to come and give them water.