Why your blood should flow like ketchup | Sean Farrington
TED Talks Daily7 Nov 2025

Why your blood should flow like ketchup | Sean Farrington

Your blood should have more in common with ketchup than just color, says chemical engineer Sean Farrington. Demonstrating the flow of everyday products like shampoo, peanut butter and ketchup, he makes the case for expanding the use of blood viscosity as a medical diagnostic, much like blood pressure. Learn more about the little-known field of rheology and how it could save lives — if taken seriously.


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Episoder(2586)

The most powerful predictor of team success | Rafael Chiuzi

The most powerful predictor of team success | Rafael Chiuzi

Remember that gut-clenching fear of speaking up in class? Organizational psychologist Rafael Chiuzi reveals how that same feeling shows up in the workplace, limiting productivity and the free exchange of ideas. Backed by decades of research and hands-on consulting, he unpacks the science of psychological safety — and shares three actionable steps to build teams where curiosity thrives and courage replaces fear. Hosted on Acast. See acast.com/privacy for more information.

11 Jul 202516min

A story of moral imagination and bold entrepreneurship | Sitoyo Lopokoiyit and Jacqueline Novogratz

A story of moral imagination and bold entrepreneurship | Sitoyo Lopokoiyit and Jacqueline Novogratz

In a conversation about visionary leadership, M-PESA CEO Sitoyo Lopokoiyit speaks with impact investor and Acumen CEO Jacqueline Novogratz about how he grew a nascent mobile payment service into Africa’s largest fintech platform — which now handles nearly 60 percent of Kenya's GDP and more than a billion dollars in daily transactions. They draw on insights from both of their careers to explore how trust, innovation and moral imagination can unlock opportunity in overlooked places. Hosted on Acast. See acast.com/privacy for more information.

10 Jul 202519min

"Marigolds," a poem about wonder | Safiya Sinclair

"Marigolds," a poem about wonder | Safiya Sinclair

Poet Safiya Sinclair performs "Marigolds: A Letter to Wonder," an original poem she created for TED that explores memory, beauty and the fragility of life. After the poem, she talks with TED's Helen Walters about her writing process — and what it feels like when the creative muse strikes. Hosted on Acast. See acast.com/privacy for more information.

9 Jul 20259min

The miraculous device that saved my farm — and changed my life | Josephine Waweru

The miraculous device that saved my farm — and changed my life | Josephine Waweru

Exhausted from carrying water up a hill to keep her small farm in Kenya thriving, Josephine Waweru received an unexpected call that offered a nearly unbelievable solution. She shares how one simple device allowed her crops (and her dreams) to flourish — and offers a glimmer of hope in the face of growing climate uncertainty. Hosted on Acast. See acast.com/privacy for more information.

8 Jul 202510min

The inside story of Notre-Dame’s incredible reconstruction | Philippe Villeneuve

The inside story of Notre-Dame’s incredible reconstruction | Philippe Villeneuve

In a moment that stunned the world in 2019, the famed Notre-Dame in Paris went up in flames, threatening the future of the centuries-old Gothic treasure. Philippe Villeneuve, the chief architect of the cathedral’s restoration, recounts the collective effort to bring the building back to life while honoring its history. Listen for a story of craftsmanship, devotion and innovation — and learn how more than 2,000 hands worked to return this landmark to the world. Hosted on Acast. See acast.com/privacy for more information.

7 Jul 202513min

Sunday Pick: The Science of Recharging on Weekends and Vacations | ReThinking with Adam Grant

Sunday Pick: The Science of Recharging on Weekends and Vacations | ReThinking with Adam Grant

Many people don’t use all their paid time off from work—and struggle to relax and recover on nights and weekends too. What does it take to make our breaks more restorative? Adam examines the evidence on recovery and burnout, explores how workplaces can reimagine vacation policies, and highlights what kinds of hobbies are best suited to different times of day. Available transcripts for WorkLife can be found at go.ted.com/WLtranscripts Hosted on Acast. See acast.com/privacy for more information.

6 Jul 202529min

The habit that could improve your career (and your life) | Paul Catchlove (re-release)

The habit that could improve your career (and your life) | Paul Catchlove (re-release)

Paul Catchlove believes strongly in the power of reflection. Through every career he's held -- from priest to opera singer to senior management consultant -- he's benefitted from a habit of considering and analyzing his goals, needs and performance. Learn more about how a regular practice of reflection can improve your decision-making, career and relationships.This episode originally aired January 5, 2023. Hosted on Acast. See acast.com/privacy for more information.

5 Jul 202512min

A firework ladder to the sky — and the magic of explosive art | Cai Guo-Qiang (re-release)

A firework ladder to the sky — and the magic of explosive art | Cai Guo-Qiang (re-release)

From a boy setting off small explosions in his living room to the creator of world-famous pyrotechnic events, multidisciplinary artist Cai Guo-Qiang has always been drawn to gunpowder. He gives a stunning tour of his work — including his fireworks spectacle at the 2008 Beijing Olympics, his "sky ladder" of fire reaching to the clouds and new work created with AI — and shows how his art probes the line between destruction and construction, control and freedom, violence and beauty. (This talk was delivered in Mandarin and translated live into English. The translation was put through a custom AI model of Cai Guo-Qiang's voice, powered by technology from Metaphysic. You'll hear how Cai would sound if he were speaking English.)This episode originally aired July 30, 2024. Hosted on Acast. See acast.com/privacy for more information.

4 Jul 202514min

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