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Wendy Freedman


When and how did the universe begin? A global group of astronomers wants to answer that question by peering as far back in time as a large new telescope will let us see. Wendy Freedman headed the creation of the Giant Magellan Telescope, under construction in South America; at TEDGlobal in Rio, she shares a bold vision of the discoveries about our universe that the GMT could make possible.

 

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ISIS, Hezbollah, Hamas. These three very different groups are known for violence — but that’s only a portion of what they do, says policy analyst Benedetta Berti. They also attempt to win over populations with social work: setting up schools and hospitals, offering safety and security, and filling the gaps left by weak governments. Understanding the broader work of these groups suggests new strategies for ending the violence

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David Eagleman


As humans, we can perceive less than a ten-trillionth of all light waves. “Our experience of reality,” says neuroscientist David Eagleman, “is constrained by our biology.” He wants to change that. His research into our brain processes has led him to create new interfaces — such as a sensory vest — to take in previously unseen information about the world around us.

David Eagleman decodes the mysteries of the tangled web of neurons and electricity that make our minds tick — and also make us human. 

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Monica Lewinsky


"Public shaming as a blood sport has to stop," says Monica Lewinsky. In 1998, she says, “I was Patient Zero of losing a personal reputation on a global scale almost instantaneously.” Today, the kind of online public shaming she went through has become constant — and can turn deadly. In a brave talk, she takes a hard look at our online culture of humiliation, and asks for a different way.

 

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Fei-Fei Li


In this short, provocative talk, architect Alison Killing looks at buildings where death and dying happen — cemeteries, hospitals, homes. The way we die is changing, and the way we build for dying ... well, maybe that should too. It's a surprisingly fascinating look at a hidden aspect of our cities, and our lives.

 

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