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How do ideas travel?
From Twitter to word of mouth, explore the ways ideas spread so quickly from person to person.
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Eric Berlow and Sean Gourley
Mapping ideas worth spreading
7 minutes 42 seconds
What do 24,000 ideas look like? Ecologist Eric Berlow and physicist Sean Gourley apply algorithms to the entire archive of TEDx Talks, taking us on a stimulating visual tour to show how ideas connect globally.
When ideas have sex
16 minutes 9 seconds
At TEDGlobal 2010, author Matt Ridley shows how, throughout history, the engine of human progress has been the meeting and mating of ideas to make new ideas. It's not important how clever individuals are, he says; what really matters is how smart the collective brain is.
How yarn bombing grew into a worldwide movement
5 minutes 20 seconds
Textile artist Magda Sayeg transforms urban landscapes into her own playground by decorating everyday objects with colorful knit and crochet works. These warm, fuzzy "yarn bombs" started small, with stop sign poles and fire hydrants in Sayeg's hometown, but soon people found a connection to the craft and spread it across the world. "We all live in this fast-paced, digital world, but we still crave and desire something that's relatable," Sayeg says. "Hidden power can be found in the most unassuming places, and we all possess skills that are just waiting to be discovered."
Why videos go viral
7 minutes 3 seconds
Kevin Allocca is YouTube's Head of Culture & Trends, and he has deep thoughts about silly web video. In this talk from TEDYouth, he shares the 4 reasons a video goes viral.
Meet the mom who started the Ice Bucket Challenge
18 minutes 43 seconds
Remember the Ice Bucket Challenge craze this summer? Meet the mom who started it all. When Nancy Frates's son Pete hurt his wrist in a baseball game, he got an unexpected diagnosis: it wasn’t a broken bone, it was ALS, and there is no cure. In this inspiring talk, Nancy tells the story of what happened next.
How young Africans found a voice on Twitter
14 minutes 12 seconds
What can a young woman with an idea, an Internet connection and a bit of creativity achieve? That's all Siyanda Mohutsiwa needed to unite young African voices in a new way. Hear how Mohutsiwa and other young people across the continent are using social media to overcome borders and circumstance, accessing something they have long had to violently take: a voice.
Where good ideas come from
17 minutes 28 seconds
People often credit their ideas to individual "Eureka!" moments. But Steven Johnson shows how history tells a different story. His fascinating tour takes us from the "liquid networks" of London's coffee houses to Charles Darwin's long, slow hunch to today's high-velocity web.
How to get your ideas to spread
16 minutes 47 seconds
In a world of too many options and too little time, our obvious choice is to just ignore the ordinary stuff. Marketing guru Seth Godin spells out why, when it comes to getting our attention, bad or bizarre ideas are more successful than boring ones.
Inside the Egyptian revolution
9 minutes 50 seconds
Wael Ghonim is the Google executive who helped jumpstart Egypt's democratic revolution ... with a Facebook page memorializing a victim of the regime's violence. Speaking at TEDxCairo, he tells the inside story of the past two months, when everyday Egyptians showed that "the power of the people is stronger than the people in power."
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.