TED Talks Daily (HD video)

Do you ever feel like time slows down when you’re bored but flies when you’re having fun? Cognitive neuroscientist Irena Arslanova explores the ways your brain and heart shape your perception of time, revealing how your heartbeat doesn’t just keep you alive — it also influences whether moments feel fleeting or stretched.

The clock is ticking on social media giant TikTok, which faces a nationwide ban in the United States unless its parent company, ByteDance, sells it by January 19. Social media theorist Clay Shirky unpacks why the US is trying to ban TikTok, what it means for the app's users and creators and the implications for national security, freedom of speech, US-China relations and more. (This interview, hosted by TED's Whitney Pennington Rodgers, was recorded on January 8, 2025.)

AI companions could either be the cure to our loneliness epidemic … or humanity's final downfall, says Eugenia Kuyda, creator of Replika — an app that allows you to create AI friends. She explores the potential of this technology to either exacerbate isolation or encourage connection, advocating for an AI whose success is driven not by clicks and screen time but by human happiness and flourishing.

2025 ushers in one of the most dangerous periods in world history — on par with the 1930s and early Cold War, says Ian Bremmer, president and founder of Eurasia Group and GZERO Media. Highlighting the top geopolitical risks for the year ahead, Bremmer explores the impact of Donald Trump’s return to power in the US, the breakdown of the US-China relationship, the consequences of a rogue Russia, the future of unchecked AI development and more, plus some bright spots amid these unprecedented challenges. (This interview, hosted by TED’s Helen Walters, was recorded on January 6, 2025.)

Software engineer Adam Munder is on a mission to break down communication barriers between the Deaf and hearing worlds. In a live demo, he introduces OmniBridge — an AI platform that translates American Sign Language into English text in real time — and demonstrates how this tech could ensure every conversation can be fully understood, regardless of the participants' hearing abilities. Munder is joined onstage by ASL interpreter Christan Hansen and TED’s Hasiba Haq. (Made in partnership with Intel)

Feeding 10 billion people without wrecking the planet means rethinking protein, from plant-based and fermented foods to lab-grown meat that tastes like the real thing. Presenting an exciting menu of sustainable options, food futurist Andy Jarvis highlights innovations, investments and policies that could help drastically lower our carbon footprint and provide everyone with the nourishment they need — without telling anyone what to eat.

Where do you draw the line between work and life? Writer Simone Stolzoff explores the problem with defining yourself by your job — and shows what it takes to reclaim your time and sense of meaning beyond the office.

It's time for our periodic update of good news from Angus Hervey, founder of Fix the News, an independent publication that reports stories of global progress. In a quick talk, he shares three major updates of recent human progress on eradicating ancient diseases, establishing massive new ocean sanctuaries and transforming children's rights. (This conversation was recorded on December 2, 2024.)

The end of the year is often a time to reflect and spend time with family — activities that may seem joyful or anxiety-inducing, depending on your circumstances. Psychologist Guy Winch offers actionable advice on how to manage your emotions with confidence during the holidays, from setting boundaries to healing heartache — above all reminding you that emotional health is possible, as long as you're informed and willing to do the work. (This live conversation was hosted by TED's Whitney Pennington Rodgers. Visit ted.com/membership to support TED today and join more exclusive events like this one.)

Is embracing your inner teenager the key to thriving in adulthood? Neuroscientist Adriana Galván shares three powerful lessons from decades of research into adolescent brain development, exploring what teens can teach us about embracing uncertainty, challenging the status quo and taking strategic risks — all tools for a bold, brave life.

When it comes to tackling the climate crisis, the majority of the workforce in Africa believes their role is in the labor-intensive, low-income work — not in the strategic, analytical or leadership-based spaces, says climate visionary and entrepreneur Joshua Amponsem. He advocates for a shift in climate funding that fosters local talent and leadership, envisioning a future where African youth are key innovators in the climate movement.

Scientists are getting closer to giving humans the power to communicate with their thoughts alone. In a live demo, researcher Chin-Teng Lin shows how brain-computer interfaces can translate a person's neural signals into text on a computer, potentially opening up a new realm of communication that turns silent thought into words.

Gabriella Lascano rose to prominence as a plus-size influencer, advocating for respect at any size with her natural blend of confidence and self-love. She shares how a friend's death led to a candid reassessment of her own health and sparked a viral conversation about the complex intersection of body image, community and personal growth.

When making a big decision, should you trust your gut or follow the data? Emergency manager Jonathan Reimer draws on his experience responding to some of Canada's largest wildfires to share advice on high-stakes decision-making that you can take to your boardroom, kitchen table or anywhere else.

Looking to level up your presentations? It might only take a poorly-drawn sketch, says professor Martin J. Eppler. He offers three tips to use visualizations at work, laying out how these simple tricks can boost creativity and communication, improve decision-making and lead to better collaboration among colleagues.

Musician Xiuhtezcatl raps, sings and plays piano in a performance seamlessly blending influences from his Indigenous and Mexican heritage.

In a lively conversation from TED's brand-new Next Stage, social scientist Kasley Killam, technologist Apolinário Passos and futurist AC Coppens explore the intricate dynamics of human-AI relationships — and show how AI is already changing the ways we live, work and connect with each other.

Math isn't just for "math kids" — it's for everyone, says learning expert Shalinee Sharma. She outlines four simple steps to transform your approach to math, creating an environment where any kid can develop a strong mathematical mind.

Aquaculture — or the practice of farming in water — is the fastest-growing food system in the world, says tech entrepreneur Gibran Huzaifah. He shares the story of how a moment of near-starvation during his university years sparked his mission to take on global hunger, starting with a tech platform that empowers small-scale fish farmers, dramatically increasing their output and income. He asks: Can feeding fish help feed the world?

Why does losing weight often feel like an uphill battle? Physician Katherine Saunders unpacks how our bodies are wired to store fat, revealing that obesity isn’t simply a lack of willpower — it’s a complex, chronic disease rooted in evolutionary biology. She shares the science behind the latest breakthroughs in treatment, from lifestyle interventions to powerful new medications.