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Dating back more than 800 years, chocolate is deeply woven into the Indigenous history of Oaxaca, Mexico. TED Fellow Germán Santillán talks about his work reviving the Mixtec technique used to prepare this ancient delicacy by training a new generation of local farmers -- helping create economic opportunity and preserve a delicious legacy at the ...

The Infinite Hotel, a thought experiment created by German mathematician David Hilbert, is a hotel with an infinite number of rooms. Easy to comprehend, right? Wrong. What if it's completely booked but one person wants to check in? What about 40? Or an infinitely full bus of people? Jeff Dekofsky solves these heady lodging issues using Hilbert's...

TED Fellow Germán Santillán is reviving Indigenous chocolate-making practices through artisanal Mexican chocolate.

A husband and wife were in despair. The woman had just given birth to their 13th child, and the growing family was quickly running out of food and money. Wandering into the woods, the father encountered a skeletal figure with sunken eyes and a gaunt face: this was Death himself, come to offer his services as Godfather. Iseult Gillespie tells the...

In 1943, Allied aircraft rained tens of thousands of leaflets on Nazi Germany below. The leaflets urged readers to renounce Hitler, to fight furiously for the future— and to never give up hope. Their call to action rippled through homes and businesses— and their message even reached concentration camps. They were signed: the White Rose. Iseult G...

Malte Spitz asked his cell phone carrier what it knew about him -- and mapped what he found out.

Hubertus Knabe studies the history of torture, oppression and surveillance in former East Germany.

All it takes is a simple S to make most English words plural. But it hasn't always worked that way (and there are, of course, exceptions). John McWhorter looks back to the good old days when English was newly split from German -- and books, names and eggs were beek, namen and eggru! [Directed by Lippy, narrated by John McWhorter].

In the mid-19th century, suspension bridges were collapsing all across Europe. Their industrial cables frayed and snapped under the weight of their decks. So when German American engineer John Roebling proposed building the largest and most expensive suspension bridge ever conceived, New York City officials were understandably skeptical. Alex Ge...

In May 1940, with the German army ready to occupy Paris, Noor Inayat Khan was faced with a difficult choice: stand on the sidelines or join the Allied forces fighting the Nazis. After witnessing the devastation across Europe, she travelled to England to learn the art of espionage. Shrabani Basu details how a pacifist turned spy helped build the ...

In the German town of Nördlingen in 1593, innkeeper Maria Höll found herself accused of witchcraft. She was arrested for questioning, and denied the charges. She insisted she wasn't a witch through 62 rounds of torture before her accusers finally released her. Other accused witches weren't so "lucky." Why did these witch hunts occur? Brian A. Pa...

Tour the deep dark world of the East German state security agency known as Stasi. Uniquely powerful at spying on its citizens, until the fall of the Berlin Wall in 1989 the Stasi masterminded a system of surveillance and psychological pressure that kept the country under control for decades. Hubertus Knabe studies the Stasi — and was spied on by...

Under the label Laokoon, Moritz Riesewieck develops films, theatre productions, essays, lecture performances and radio plays that deal with the question of how our idea of humans and society change or can be transformed in the digital era.

Uğur Şahin is the cofounder and CEO of BioNTech and one of the world's foremost experts on messenger ribonucleic acid (mRNA) medicines. He initiated the historic development of the first mRNA vaccine for COVID-19.

In 2013, the world learned that the NSA and its UK equivalent, GCHQ, routinely spied on the German government. Amid the outrage, artists Mathias Jud and Christoph Wachter thought: Well, if they're listening ... let's talk to them. With antennas mounted on the roof of the Swiss Embassy in Berlin's government district, they set up an open network ...

Özlem Türeci is the cofounder and chief medical officer of BioNTech. She leads the clinical development of "Project Lightspeed," the company's successful effort to develop and distribute an mRNA-based vaccine against COVID-19, a historic achievement completed in less than one year.

Mathias Basner researches the effects of noise on sleep, health, neurobehavioral and cognitive functions and more.

Under the label Laokoon, Hans Block develops films, theatre productions, essays, lecture performances and radio plays that deal with the question of how our idea of humans and society change or can be transformed in the digital era.

Jens Burchardt is BCG's global expert on climate impact and cofounder of its Center for Climate Action.

About this event: Hosted by the German Center for Research and Innovation (DWIH) New York, TEDxDWIHNewYork invites three German and American experts to share their research on cities and climate change to open the digital conference, the FUTURE FORUM: Building Biopolis.

For anyone who believes poetry is stuffy or elitist, Amanda Gorman -- the youngest inaugural poet in US history -- has some characteristically well-chosen words. Poetry is for everyone, she says, and at its core it's all about connection and collaboration. In this fierce talk and performance, she explains why poetry is inherently political, pays...

Poet and activist Amanda Gorman recites her poem "The Hill We Climb" at the historic inauguration of Joe Biden and Kamala Harris. Her words call for hope, unity and resilience in a time of division. "While democracy can be periodically delayed, it can never be permanently defeated," she says. "In this truth, in this faith, we trust. For while we...

We currently have enough fossil fuels to progressively transition off of them, says climate campaigner Tzeporah Berman, but the industry continues to expand oil, gas and coal production and exploration. With searing passion and unflinching nerve, Berman reveals the delusions keeping true progress from being made -- and offers a realistic path fo...

A thoughtful ode to health care, composed by Tilo Alpermann and performed on the TED@Merck KGaA, Darmstadt, Germany stage by Lars Jönnson.

Jochen Wegner edits Zeit Online, the website of German weekly "Die Zeit," which prizes deep dives into cultural issues.

A pioneering graphic designer in Egypt, Ghada Wali has designed fonts, brands and design-driven art projects.

Ralph Langner is a German control system security consultant. He has received worldwide recognition for his analysis of the Stuxnet malware.

Archaeologists routinely vet terrestrial construction and development projects to make sure they don't accidentally damage historical sites. Why not do the same for the moon? In this cautionary talk, space archaeologist Alice Gorman highlights the moon's prominent role in our culture and the importance of thoughtfully preserving it.

Are you looking closely? Visual educator Amy Herman explains how to use art to enhance your powers of perception and find connections where they may not be apparent. Learn the techniques Herman uses to train Navy SEALs, doctors and crime scene investigators to convert observable details into actionable knowledge with this insightful talk.