TED-Ed

Explore the diverse and vital ecosystem of the Everglades, and discover why the alligator is so essential to the region.

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Despite alligators ruling the swamplands of the Everglades for millennia, the last 500 years have brought deadly new predators that challenge their reign. And the origins of these international invaders are just as unexpected as their impact on the Everglades. So, what exactly is threatening this biodiverse region? Kenny Coogan explores the unique and precious ecosystem.

Lesson by Kenny Coogan, directed by Doug Alberts, Noodle.

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View full lesson: https://ed.ted.com/lessons/can-alligators-survive-this-apex-predator-kenny-coogan
Dig deeper with additional resources: https://ed.ted.com/lessons/can-alligators-survive-this-apex-predator-kenny-coogan#digdeeper

Animator's website: https://www.noodleanimation.com
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Uploaded 08-10-18

Mounting his skinny steed, Don Quixote charges an army of giants. It is his duty to vanquish these behemoths in the name of his beloved lady, Dulcinea. There’s only one problem: the giants are merely windmills. What is it about this tale of the clumsy yet valiant knight that makes it so beloved? Ilan Stavans investigates.

Lesson by Ilan Stavans, directed by Avi Ofer.

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Explore the viability of wooden skyscrapers, and see how cross-laminated timber (CLT) helps make these once impossible structures possible.

Uploaded 06-07-21

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Towering 85 meters above the Norwegian countryside, Mjøstårnet is the world’s tallest wooden building, made almost entirely from the trees of neighboring forests. But as recently as the end of the 20th century, engineers thought it was impossible to build a wooden building over 6 stories tall. So how do wooden structures like this compare to steel and concrete skyscrapers? Stefan Al investigates.

Lesson by Stefan Al, directed by Franz Palomares.

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View full lesson: https://ed.ted.com/lessons/could-we-build-a-wooden-skyscraper-stefan-al
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Dig into the history of the construction of the iconic Brooklyn Bridge and how John Roebling designed a hybrid suspension system to build it.

Uploaded 11-02-20

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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 Gendler details the building of the iconic Brooklyn Bridge.

Lesson by Alex Gendler, directed by Jeremiah Dickey.

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View full lesson: https://ed.ted.com/lessons/epic-engineering-building-the-brooklyn-bridge-alex-gendler

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View full lesson: http://ed.ted.com/lessons/less-stuff-more-happiness-graham-hill

Writer and designer Graham Hill asks: Can having less stuff, in less room, lead to more happiness? He makes the case for taking up less space, and lays out three rules for editing your life.

Talk by Graham Hill

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View full lesson: http://ed.ted.com/lessons/every-city-needs-healthy-honey-bees-noah-wilson-rich

Bees have been rapidly and mysteriously disappearing from rural areas, with grave implications for agriculture. But bees seem to flourish in urban environments -- and cities need their help, too. Noah Wilson-Rich suggests that urban beekeeping might play a role in revitalizing both a city and a species. (Filmed at TEDxBoston.)

Talk by Noah Wilson-Rich.

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Solution to Bonus Riddle: https://brilliant.org/TedEdRoboAnts/

Uploaded 09-10-18

The good news is that your experimental robo-ants are a success. The bad news is that you accidentally gave them the ability to shoot deadly lasers … and you can’t turn it off. Can you stop them from escaping their habitat before the lasers are activated? Dan Finkel shows how.

Lesson by Dan Finkel, directed by Artrake Studio.

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To find the path to long life and health, Dan Buettner and team study the world's "Blue Zones," communities whose elders live with vim and vigor to record-setting age. In his talk, he shares the 9 common diet and lifestyle habits that keep them spry past age 100. (Filmed at TEDxTC.)

Talk by Dan Buettner.

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View full lesson: http://ed.ted.com/lessons/da-vinci-s-vitruvian-man-of-math-james-earle

Uploaded 11-07-13

What's so special about Leonardo da Vinci's Vitruvian Man? With arms outstretched, the man fills the irreconcilable spaces of a circle and a square -- symbolizing the Renaissance-era belief in the mutable nature of humankind. James Earle explains the geometric, religious and philosophical significance of this deceptively simple drawing.

Lesson by James Earle, animation by TED-Ed.



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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."

Uploaded 12-07-13

Talk by Eduardo Paes.



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