TED Climate TED Audio Collective

Your closet is likely full of all kinds of materials — leather, cotton, nylon and polyester, to name a few — that contribute to fashion's sustainability crisis. Biomaterials investigator Dan Widmaier explains how we could look to nature for sustainable replacements for these much-used materials and introduces a leather alternative made from mushrooms that looks great and doesn't harm the environment. "We can make fashion sustainable, and we're going to do it with science," Widmaier says.

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.

From the return of nomadic living to a climate-disrupted world, author and global strategist Parag Khanna has some predictions for humanity. Get a fascinating glimpse at the future as he tackles an urgent question: Where on Earth will eight billion humans live in the uncertain times ahead?

(This conversation, hosted by TED current affairs curator Whitney Pennington Rodgers, was part of an exclusive TED Membership event. Visit ted.com/membership to become a TED Member.)

The single most important thing for avoiding a climate disaster is cutting carbon pollution from the current 51 billion tons per year to zero, says philanthropist and technologist Bill Gates. Introducing the concept of the "green premium" — the higher price of zero-emission products like electric cars, artificial meat or sustainable aviation fuel — Gates identifies the breakthroughs and investments we need to reduce the cost of clean tech, decarbonize the economy and create a pathway to a clean and prosperous future for all.

Today's youth have inherited a big, unprecedented climate problem to solve — and the eco-anxiety to go with it. Gen-Zer and activist Clover Hogan knows the struggle firsthand, but she also understands the path to climate action starts with the one thing you can control: your mindset. She explains why challenging the stories that keep you feeling powerless can help you take the first step to protecting the planet for generations to come.

This is an episode from a show we think you might like: The Anti-Dread Climate Podcast.

Holiday shopping season is upon us, but instead of having a wasteful, plastic-heavy Christmas, why not have a green one? Hosts Candice and Caleigh have tips for how to celebrate sustainable holidays, from your wrapping paper to the menu at your holiday dinner.