Drawing on his work reconstructing the vocal tract of an ancient Egyptian priest, speech scientist David M. Howard shares three evolutionary wonders of human speech -- and the importance of nurturing your own voice in an increasingly noisy world.

In all the conversations about improving education for children, the voices of students, teachers and community members are often left out. Educational designer Punya Mishra offers a method to shift that paradigm, taking us through new thinking on the root of success (and failure) at school -- and how a totally new, different kind of educational system could better meet students' needs.

In a captivating, poetic ode to the beauty and strength of mixed languages, writer Julián Delgado Lopera paints a picture of immigrant and queer communities united not by their refinement of language but by the creative inventions that spring from their mouths. They invite everyone to reconsider what "proper" English sounds like – and imagine a blended future where those on the margins are able to speak freely.

In a practical, playful talk, leadership visionary Anne Morriss reinvents the playbook for how to lead through change -- with a radical, one-week plan to build trust and fix problems by following a step per day.

Neurotechnology, or devices that let you track your own brain activity, could help you deeply understand your health. But without privacy protections, your innermost thoughts, emotions and desires could be at risk of exploitation, says neurotech and AI ethicist Nita Farahany. She details some of the field's promising potential uses -- like tracking and treating diseases from depression to epilepsy -- and shares concerns about who collects our brain data and how they plan to use it, ultimately calling for the legal recognition of "cognitive liberty" as we connect our brains and minds to technology.

Dinosaur tracks can teach us more about the day-to-day behavior of creatures like T. rex or the Stegosaurus than their skeletons ever could, says paleontologist Martin Lockley. From a "dinosaur's lover's lane" in Colorado to the rocky shores of South Korea, Lockley explores what we can learn from the traces of some of the most impressive creatures ever to walk the Earth.

Could the next wonder drug be somewhere in Canada's snowy north? Take a trip to this beautiful, frigid landscape as chemist Normand Voyer explores the mysterious molecular treasures found in plants thriving in the cold. These scarcely investigated organisms could hold immense medical promise, he says – so long as we work quickly enough to discover them.

In the US, youth in foster care are nearly twice as likely as war veterans to suffer from PTSD. Placed in foster care at just 11 months old, 2023 Audacious Project grantee Sixto Cancel experienced the faults of the system firsthand. Now, he's the founder of Think of Us, an organization working to reform child welfare by centering kinship care, or placing a child with an extended family member or a familiar adult. Learn more about his plan to help thousands of kids searching for a loving home with one simple, systemic switch. (This ambitious idea is a part of the Audacious Project, TED's initiative to inspire and fund global change.)

Lots of people talk about the need to be physically fit, but mentally fit? Not as much. In a powerful talk, mental health advocate Gus Worland shares how an experience of deep grief from his own life sparked his mission to advocate for suicide prevention -- and shows why "looking after your own village" can be as simple as sending a text message, right now, to the person you cannot imagine living without.

Using found materials and mesmerizing structures that unearth deep-rooted emotions, Wangechi Mutu's visual creations celebrate our collective history and explore how art communicates into the future. From ancient rock carvings in the Sahel to her own chimeric abstractions, she shares her journey of self-discovery and reminds us all that we already speak the most ancient language of all.