Eduardo Paes The 4 commandments of cities
Eduardo Paes is the mayor of Rio de Janeiro, a sprawling, complicated, beautiful city of 6.5 million. He shares four big ideas about leading Rio — and all cities — into the future, including bold (and do-able) infrastructure upgrades and how to make a city "smarter."
Vik Muniz Art with wire, sugar, chocolate and string
Vik Muniz makes art from pretty much anything, be it shredded paper, wire, clouds or diamonds. Here he describes the thinking behind his work and takes us on a tour of his incredible images.
Juliana Machado Ferreira The fight to end rare-animal trafficking in Brazil
Biologist Juliana Machado Ferreira, a TED Senior Fellow, talks about her work helping to save birds and other animals stolen from the wild in Brazil. Once these animals are seized from smugglers, she asks, then what?
Sebastião Salgado The silent drama of photography
Economics PhD Sebastião Salgado only took up photography in his 30s, but the discipline became an obsession. His years-long projects beautifully capture the human side of a global story that all too often involves death, destruction or decay. Here, he tells a deeply personal story of the craft that nearly killed him, and shows breathtaking images from his latest work, Genesis, which documents the world's forgotten people and places.
Suzana Herculano-Houzel What is so special about the human brain?
The human brain is puzzling — it is curiously large given the size of our bodies, uses a tremendous amount of energy for its weight and has a bizarrely dense cerebral cortex. But: why? Neuroscientist Suzana Herculano-Houzel puts on her detective's cap and leads us through this mystery. By making "brain soup," she arrives at a startling conclusion.
Isabel Allende Tales of passion
Author and activist Isabel Allende discusses women, creativity, the definition of feminism — and, of course, passion — in this talk.
Jaime Lerner A song of the city
Jaime Lerner reinvented urban space in his native Curitiba, Brazil. Along the way, he changed the way city planners worldwide see what's possible in the metropolitan landscape.
Enrique Peñalosa Why buses represent democracy in action
"An advanced city is not one where even the poor use cars, but rather one where even the rich use public transport," argues Enrique Peñalosa. In this spirited talk, the mayor of Bogotá shares some of the tactics he used to change the transportation dynamic in the Colombian capital... and suggests ways to think about building smart cities of the future.
Teddy Cruz How architectural innovations migrate across borders
As the world's cities undergo explosive growth, inequality is intensifying. Wealthy neighborhoods and impoverished slums grow side by side, the gap between them widening. In this eye-opening talk, architect Teddy Cruz asks us to rethink urban development from the bottom up. Sharing lessons from the slums of Tijuana, Cruz explores the creative intelligence of the city's residents and offers a fresh perspective on what we can learn from places of scarcity.
Greg Asner Ecology from the air
What are our forests really made of? From the air, ecologist Greg Asner uses a spectrometer and high-powered lasers to map nature in meticulous kaleidoscopic 3D detail — what he calls "a very high-tech accounting system" of carbon. In this fascinating talk, Asner gives a clear message: To save our ecosystems, we need more data, gathered in new ways.