"Great dreams aren't just visions," says Astro Teller, "They're visions coupled to strategies for making them real." The head of X (formerly Google X), Teller takes us inside the "moonshot factory," as it's called, where his team seeks to solve the world's biggest problems through experimental projects like balloon-powered Internet and wind turb...

In 1985, architect Paul Pholeros was challenged to "stop people getting sick" in a small indigenous community in south Australia. And it meant thinking way beyond medicine. In this sparky, interactive talk, Pholeros shares his work with Healthabitat, which works to reduce poverty through practical design fixes -- in Australia and beyond.

Paul Pholeros was a director of Healthabitat, a longstanding effort to improve the health of indigenous people by improving their living housing.

In 2013, the largest experiment in crowd-sourced investing happened in Australia, as everyday citizens took the reins on investing the country's pension fund. Nathan Ide explores how certain cultural characteristics of Australians have inspired this groundbreaking model for managing pensions.

Hamish Jolly brings his entrepreneurial eye to the rare but viscerally terrifying issue of shark attacks.

The former prime minister of Australia, Kevin Rudd is also a longtime student of China, with a unique vantage point to watch its power rise in the past few decades. He asks whether the growing ambition of China will inevitably lead to conflict with other major powers -- and suggests another narrative.

Failure isn’t fun, but it is an opportunity to learn, reflect and regroup. These insightful talks can help you pick yourself up after a setback and grow toward success.

What defines success -- and what is a failure, exactly? Readjust your expectations with these novel, refreshing perspectives on what it means to “win” and “lose”.

As "Captain of Moonshots" for X, Astro Teller oversees the secret projects that could reshape our lives in coming decades.

Gill Hicks has dedicated her life to being an advocate for peace.

A surgical pioneer in Singapore, Susan Lim is a researcher and entrepreneur.

Paleontologist Michael Archer is working to bring back his favorite extinct animal: the Tasmanian tiger.

Yassmin Abdel-Magied wears many hats, including a hijab. She's a mechanical engineer, writer and activist who campaigns for tolerance and diversity.

Hamish Jolly, an ocean swimmer in Australia, wanted a wetsuit that would deter a curious shark from mistaking him for a potential source of nourishment. (Which, statistically, is rare, but certainly a fate worth avoiding.) Working with a team of scientists, he and his friends came up with a fresh approach — not a shark cage, not a suit of chain-...

12 counterintuitive talks to flip your thinking on everything from shoes to aid organizations to the universe.

In 1996, Thordis Elva shared a teenage romance with Tom Stranger, an exchange student from Australia. After a school dance, Tom raped Thordis, after which they parted ways for many years. In this extraordinary talk, Elva and Stranger move through a years-long chronology of shame and silence, and invite us to discuss the omnipresent global issue ...

Mike Cannon-Brookes is an entrepreneur, technology investor and passionate clean energy evangelist.

Anthony Goldbloom crowdsources solutions to difficult problems using machine learning.

There are about 7,000 languages spoken around the world -- and they all have different sounds, vocabularies and structures. But do they shape the way we think? Cognitive scientist Lera Boroditsky shares examples of language -- from an Aboriginal community in Australia that uses cardinal directions instead of left and right to the multiple words ...

Through his charity HALT, Jeremy Forbes aims to break through the stigma attached to mental health, raise awareness through education and empower men to open up conversations around mental health and suicide prevention.

Khadija Gbla grew up caught between two definitions of what it means to be an “empowered woman.” While her Sierra Leonean mother thought that circumsizing her — and thus stifling her sexual urges — was the ultimate form of empowerment, her culture as a teenager in Australia told her that she deserved pleasure and that what happened to her was ca...

Ernesto Sirolli got his start doing aid work in Africa in the 70's -- and quickly realised how ineffective it was.

Get ready to have your mind blown by the best science and tech talks to hit the TED stage in 2016.

Tara Winkler helps vulnerable children escape poverty and be cared for within their families.

Noelle Martin advocates for a safer and more just online world.

Over the past 35 years Peter Saul has been intimately involved in the dying process for over 4,000 patients. He is passionate about improving the ways we die.

Westpac's Michelle Knox has led large-scale transformation programs in the UK, Ireland and Australia.

Dermatologist Richard Weller wants to know: Why are Scots so sick?

Aspiring Olympic skier Janine Shepherd was nearly killed when she was hit by a truck during a training bike ride. Paralysed and immobile for six months, she was given a grim picture for recovery. But not only did she teach herself to walk again— she learned to fly.

Matthew Broadhurst is an ear, nose and throat surgeon based in Brisbane, Australia.