Refrigerators do much more than store your groceries -- they're also vital to preserving and distributing vaccines. Illustrating the realities of (and threats to) global vaccine supply chains, technologist and TED Fellow Nithya Ramanathan describes how smart sensors placed in fridges that store medical supplies can provide crucial, real-time data and ensure people get the life-saving care they need.

What if you could eat chicken nuggets without harming a chicken? It's possible through "cellular agriculture," says Isha Datar. In a talk about cutting-edge science, she explains how this new means of food production makes it possible to eat meat without the negative consequences of industrial farming -- and how it could fundamentally change our food systems for the better. "It's our once-in-a-lifetime opportunity to get a second chance at agriculture," she says.

Your belly and your brain speak to each other, says obesity researcher Mads Tang-Christensen. Offering scientific proof that obesity is a disease influenced by genetics and the environment, he introduces a molecule discovered in both the brain and gut that helps control appetite -- and which could be engineered to promote healthy weight loss for those living with obesity.

Your belly and your brain speak to each other, says obesity researcher Mads Tang-Christensen. Offering scientific proof that obesity is a disease influenced by genetics and the environment, he introduces a molecule discovered in both the brain and gut that helps control appetite -- and which could be engineered to promote healthy weight loss for those living with obesity.

Get transported on a stunningly rendered, sci-fi safari through Planet City: an imaginary metropolis of 10 billion people, from the brain of director and architect Liam Young. Explore the potential outcomes of an urban space designed to house the entire population of the earth -- and imagine answers to what is possible, and what is sustainable, for the planet.

Sci-fi writer Chen Qiufan doesn't fear a dystopian future. Instead, he believes developments in artificial intelligence will make all of our lives better, healthier and safer. He takes us on a tour of the next 20 years of AI and shares some astonishing predictions for the advancements in science and technology that could await us. "For every future we wish to create, we must first learn to imagine it," he says.

Sci-fi writer Chen Qiufan doesn't fear a dystopian future. Instead, he believes developments in artificial intelligence will make all of our lives better, healthier and safer. He takes us on a tour of the next 20 years of AI and shares some astonishing predictions for the advancements in science and technology that could await us. "For every future we wish to create, we must first learn to imagine it," he says.

As COVID-19 spread, BioNTech cofounders Uğur Şahin and Özlem Türeci had one goal: to make a safe, effective vaccine faster than ever before. In this illuminating conversation with head of TED Chris Anderson, the immunologists (and married couple) share the fascinating story of how their decades of mRNA research powered the Pfizer-BioNTech vaccine -- and forecast what this breakthrough science could mean for the future of vaccines and other immunotherapy treatments.

As COVID-19 spread, BioNTech cofounders Uğur Şahin and Özlem Türeci had one goal: to make a safe, effective vaccine faster than ever before. In this illuminating conversation with head of TED Chris Anderson, the immunologists (and married couple) share the fascinating story of how their decades of mRNA research powered the Pfizer-BioNTech vaccine -- and forecast what this breakthrough science could mean for the future of vaccines and other immunotherapy treatments.

We've misplaced the building blocks of the cosmos -- and particle physicists like Claire Malone are on a mission to find them. Despite scientists hitting a "major snag" in uncovering what exactly makes up dark matter and dark energy, she explains how questioning our fundamental understanding of nature itself invites a different, more meaningful perspective universally.