Best Ted Talks about poverty

Human beings have been campaigning against inequality and poverty for 3,000 years. But this journey is accelerating. Bono "embraces his inner nerd" and shares inspiring data that shows the end of poverty is in sight ... if we can harness the momentum.

What do you think of people in poverty? Maybe what Jessica Jackley once did: "they" need "our" help, in the form of a few coins in a jar. The co-founder of Kiva.org talks about how her attitude changed -- and how her work with microloans has brought new power to people who live on a few dollars a day.

Jacqueline Novogratz tells a moving story of an encounter in a Nairobi slum with Jane, a former prostitute, whose dreams of escaping poverty, of becoming a doctor and of getting married were fulfilled in an unexpected way.

It's 2013, yet 2.5 billion people in the world have no access to a basic sanitary toilet. And when there's no loo, where do you poo? In the street, probably near your water and food sources -- causing untold death and disease from contamination.

Alleviating poverty is more guesswork than science, and lack of data on aid's impact raises questions about how to provide it. But Clark Medal-winner Esther Duflo says it's possible to know which development efforts help and which hurt -- by testing solutions with randomized trials.

It's an unexpected side effect of globalization: problems that once would have stayed local-say, a bank lending out too much money-now have consequences worldwide. But still, countries operate independently, as if alone on the planet. Policy advisor Simon Anholt has dreamed up an unusual scale to get governments thinking outwardly: The Good Country Index.

In 1985, architect Paul Pholeros was challenged by the director of an Aboriginal-controlled health service to "stop people getting sick" in a small indigenous community in south Australia. The key insights: think beyond medicine and fix the local environment.