The hidden danger of lead in soil | Yvette Cabrera

Sheryl Lee Ralph is a force, delivering iconic performances both on stage and screen. But she didn't always know if she'd make it big. In a lively talk sparkling with actionable advice, she shares how her struggles taught her what it takes to believe in herself -- and how we can all find the self-confidence to keep moving forward.

Would you tango with a robot? Inviting us into the fascinating world of dancing machines, robot choreographer Catie Cuan highlights why teaching robots to move with grace, intention and emotion is essential to creating AI-powered machines we will want to welcome into our daily lives.

This is our first episode of a new series — the TED Talks Daily Book Club. Join Elise as she interviews TED speakers about their books and their ideas beyond the page. First up: Geena Rocero, an award-winning producer, model, director and the author of "Horse Barbie: A Memoir." A stunning narrative at the center of transgender history and activism, Rocero's story of survival, love, celebration and pure joy is the kind of book you won't want to put down.This interview was recorded live as part of the TED Membership program. TED Members are invited to attend our live recordings and participate in Q&As with authors. To join in on the fun, sign up at go.ted.com/membership

As a self-proclaimed radical street librarian, Storybook Maze makes books appear where they're scarce. Through initiatives like free, public book vending machines and street corner story times, she eliminates book deserts — or areas with limited access to literature — by making books accessible for children in underserved communities. (And in case you're wondering, she shares how you can become a radical street librarian, too.)

The Maasai people have lived sustainably off the savanna for centuries, raising cattle for sustenance and income. Climate activist Dorcas Naishorua paints a picture of how the climate crisis is threatening their way of life — and calls for local and international support as they're forced to adapt to a changing environment.

There's an invisible health threat right under our feet, says investigative journalist Yvette Cabrera. She digs into the pervasive problem of lead contamination in soil — a particular risk for children in cities — and shares her action plan to map urban soils and help create healthier communities.

How will AI improve our lives in the years to come? From its inception six decades ago to its recent exponential growth, futurist Ray Kurzweil highlights AI’s transformative impact on various fields and explains his prediction for the singularity: the point at which human intelligence merges with machine intelligence.

Would you swallow a micro-robot? In a gutsy demo, physician Vivek Kumbhari navigates Pillbot, a wireless, disposable robot swallowed onstage by engineer Alex Luebke, modeling how this technology can swiftly provide direct visualization of internal organs. Learn more about how micro-robots could move us past the age of invasive endoscopies and open up doors to more comfortable, affordable medical imaging. (This talk contains medical imagery.)

Agriculture fundamentally changed the way humans live — but at a cost, using up huge tracts of land and wreaking havoc on the environment, even as millions still go hungry. Entrepreneur and investor David Friedberg paints a picture of the evolution of agriculture and introduces a scientific breakthrough — "boosted breeding" — that might just transform how the world produces food. (This conversation was recorded live with head of TED Chris Anderson.)

 Each Sunday, TED shares an episode of another podcast we think you'll love, handpicked for you… by us. Today we're sharing a special episode of ReThinking with Adam Grant.Justin Trudeau has served as the Prime Minister of Canada since 2015. And there’s a lot to dig into from his years in office — and from his life before, as well. Adam sits down with him to discuss lessons learned about leadership. The Prime Minister opens up for the first time about his early struggles with impostor syndrome and how he maintains his motivation in the face of disapproval and criticism today. He also shares how he encourages people to speak truth to power, where his team is challenging him to improve right now, why he considered quitting, and what keeps him awake at night.  Get more ReThinking with Adam Grant wherever you get your podcasts.Transcripts for ReThinking are available at go.ted.com/RWAGscripts