TED Climate

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.

The third season of Sold Out examines the intersection of the climate and housing crises. Hosted by Erin Baldassari, the series tells the stories of families and communities throughout California, as they grapple with the ways that climate is challenging the very idea of home. Sold Out shines a light on the solutions that can help us all face the future, highlighting the people who are actively working to protect their communities. This series questions assumptions that dictate how and where people live, while examining the barriers – whether political, financial or social – that hold us back from embracing or realizing change.  Listen to Sold Out wherever you listen to podcasts.

TED Climate will be back soon -- in the meantime here is an episode of another podcast we thought you'd enjoy. This is the first episode of a five-part series exploring the European energy crisis in the wake of Russia’s invasion of Ukraine. In this season, we ask the trillion dollar question: Will this crisis speed or slow down the energy transition in Europe? And what does that mean for the rest of the world? Unpacking the history behind Europe’s dependence on Russian energy Putin’s assault on Ukraine triggered an energy crisis that sent Europe’s economies into a tailspin and put the European energy transition to the test. But how did the European Union, a leader in climate action, become so dependent on Russian oil and gas to begin with? This season, we look at the energy systems of Germany and Poland. Both have very different energy systems, but both became dependent on Russian energy for heating homes, firing power plants, and fueling businesses. In this episode, we look at the immediate impact of the Ukraine invasion on that dependency and the historical influences behind it– from Germany’s pursuit of natural gas to Poland’s centuries-long relationship with coal. Then we ask whether Europe’s initial response to the crisis– leaning more heavily on fossil fuels– will accelerate or slow down Europe’s push toward green energy. If you like The Big Switch, you can listen wherever you get your podcasts.

Not Too Late, written by Rebecca Solnit and Thelma Young Lutunatabua, offers us the tools to tackle this current wave of disinformation, and provides tangible stories of hope. On this episode of Outrage + Optimism, hear how the project aims to invite newcomers to the climate movement, as well as providing climate facts and encouragement for people who are already engaged but weary. Listening to these two incredible women speak about Not Too Late, which ‘rang a bell of truth’ for hosts Tom Rivett-Carnac, Christiana Figueres, and Paul Dickinson. Outrage + Optimism is another member of the TED Audio Collective. For more episodes that help you understand that you DO have the power to solve this, follow the podcast wherever you're listening to this.

Many people across the world don't have access to healthy food -- while in other places tons of food go to waste. Social entrepreneur Ndidi Okonkwo Nwuneli thinks we can take bold steps to fix this problem. She lays out what it would take to build a more equitable, sustainable food system that nourishes all people and asks us to widen our perspectives before eating our next meal.

"Breathing clean air is every child's human right," says grassroots campaigner Rosamund Adoo-Kissi-Debrah, sharing the heartbreaking story of her seven-year-old daughter, Ella Roberta, whose asthma was triggered to a fatal point by air pollution. Now, Adoo-Kissi-Debrah is on a mission to raise awareness about the harmful effects of unsafe air on our health and the planet. In this moving talk, she details why governments have an urgent responsibility to take action on air pollution -- and ensure that all children have a chance to live full and healthy lives.

Over the last two decades, the wind power industry has grown at a dizzying pace. (Fun fact: a single rotation from one of the world's most powerful wind turbines can generate enough electricity to charge more than 1,400 cell phones.) Building off this exponential growth, Denmark's climate minister Dan Jørgensen lays out his plan to end the country's oil industry by 2050 and transition to a fossil-free future powered by wind energy.

"The way we cool things down is heating the planet even more," says sustainable development expert Rachel Kyte -- and the solutions go well beyond just fixing air-conditioning. She identifies four major areas with transformative solutions -- from roofs painted with bright white paint to solar control glass to more efficient cold chains for vaccines -- that can be implemented in fair and sustainable ways. Learn more about what a community designed for cool could look like.

What do woolly pigs have to do with climate change? They're part of a vital, ingenious and evolving strategy to take carbon out of the sky and store it safely -- in trees, soils, the ocean, buildings, rocks and deep underground. Every carbon removal approach takes some combination of natural resources, human ingenuity and technology, says climate thinker Gabrielle Walker. If we get the mix right, we can clean up the environmental mess we've made, reverse the processes behind climate change and give nature a chance to heal. "What goes up must now come down," she says.

Bjørn Otto Sverdrup leads the Oil and Gas Climate Initiative (OGCI), which gathers the CEOs of twelve of the world's largest oil and gas companies around an ambitious goal: to get one of the sectors contributing most to climate change to drastically lower their own carbon emissions. He describes a possible path for the industry to pivot to net-zero operations, reimagining the role it could play in helping decarbonize the economy and changing how we consume energy -- and he calls for setting a price on carbon. (Followed by a Q&A with Countdown cofounder Lindsay Levin)

Most scientific literature is written only in English, creating an alarming knowledge gap for the 75 percent of the world who don't speak it. That's a big problem for climate change -- because it's hard to take action on something you don't understand. With Climate Cardinals, an international youth-led nonprofit that's working to make the climate movement more accessible, activist and social entrepreneur Sophia Kianni is furthering the global transfer of knowledge by translating and sourcing crucial climate resources into more than 100 languages. A barrier-breaking talk about the collective effort we'll need to protect the future of our planet.

As chairman of the world's largest maritime shipping company, Jim Hagemann Snabe thinks a lot about how goods get where they need to go and the impact their journey has on the planet. Leading the effort to decarbonize shipping by 2050, he shares a plan to convert green electricity into green liquid fuel to power vessels in a process called "power-to-X" -- and urges global leaders to join the voyage towards an innovative, sustainable and fast-approaching future.

By 2100, the UN estimates that the world's population will grow to just over 11 billion people. Architect Vishaan Chakrabarti wants us to start thinking about how we'll house all these people -- and how new construction can fight climate change rather than make it worse. In this visionary talk, Chakrabarti proposes a "Goldilocks" solution to sustainable housing that exists in the sweet spot between single-family homes and towering skyscrapers.

There's been explosive investment in new technologies aimed at decarbonizing the planet. But climate investor Dawn Lippert says something key is missing from this strategy: investment in the local people these solutions would most affect. She shares how she's bridging the gap between investment in new tech and local communities -- by getting closer to the places where these ideas are being put into action.

The doctrine of "first, do no harm" is the basis of the Hippocratic Oath, one of the world's oldest codes of ethics. It governs the work of physicians -- but climate and health campaigner Shweta Narayan says it should go further. In this essential talk, she highlights the interdependence of environmental and human health and emphasizes the necessity of placing health at the heart of all climate solutions.

"How much more damage do we have to endure before we realize that it's cheaper to save this planet than to ruin it?" asks engineer and investor John Doerr. In conversation with Countdown cofounder Lindsay Levin, Doerr and systems innovator Ryan Panchadsaram lay out six big objectives that -- if pursued with speed and scale -- could transform society and get us to net-zero emissions by 2050. An action plan to solve the world's climate crisis, backed up by a proven system for setting goals for success.

The financial sector often talks of decarbonizing investment portfolios as a way to fight climate change. But portfolios can be "cleaned" without having any real impact on the problem, says investment expert Nili Gilbert. Bringing science to finance, she unpacks how investors can actually help decarbonize the world -- a costly endeavor, estimated at three to five trillion dollars per year between now and 2050 -- and ensure the climate transition is just, global and interconnected. "Changing the markets can be a way to change the world," she says.

What we know today about global greenhouse gas emissions is mostly self-reported by countries, and those numbers (sometimes tallied manually on paper!) are often inaccurate and prone to manipulation. If we really want to get serious about fighting climate change, we need a way to track carbon pollution in real-time and identify the worst culprits, says high-tech environmental activist Gavin McCormick. Enter Climate TRACE: a coalition of scientists, activists and tech companies using satellite imagery, big data and AI to monitor and transparently report on all of the world's emissions as they happen -- and speed up meaningful climate action. A powerful, free, global tool to match the scale of a civilization-threatening crisis.

When it comes to tackling climate change, the size of a country doesn't matter -- it's their ambition that counts, says First Minister of Scotland Nicola Sturgeon. In a rousing talk, she shares examples of small nations -- from Bhutan and Fiji to her own Scotland -- whose leadership and climate action are galvanizing change on the international stage. (Followed by a brief Q&A with TED's global curator Bruno Giussani about the Cambo oil field project)

A net-zero future is possible, but first we need to flip a mental switch to truly understand that we can stop the climate crisis if we try, says Nobel laureate Al Gore. In this inspiring and essential talk, Gore shares examples of extreme climate events (think: fires, floods and atmospheric tsunamis), identifies the man-made systems holding us back from progress and invites us all to join the movement for climate justice: "the biggest emergent social movement in all of history," as he puts it. An unmissable tour de force on the current state of the crisis -- and the transformations that will make it possible to find a way out of it.

Today we're featuring a preview of a new show you might enjoy: Guardians of the River, the winner of the 2021 Best Narrative Nonfiction Podcast Award at Tribeca Film Festival. This is the story of the guardians of the Okavango water system. These guardians have a monumental task: safeguard a remote, near pristine environment facing threats from all sides. This podcast follows what happens when worlds connect, and at times collide, with the common goal of protecting a place. Hosted by Angolan biologist Kerllen Costa, this series includes immersive sound and is best listened with headphones.

Climate action can be a vehicle to deliver dignity, opportunity and equality for all. UN Deputy Secretary-General Amina J. Mohammed invites us to reimagine what the journey to net-zero could look like if we invest in people's climate efforts while prioritizing the 17 Sustainable Development Goals -- a blueprint of interlinked global goals to protect humanity and our warming planet. "It's time to make some serious noise to transform our world," she says.

"Cutting methane is the single fastest, most effective opportunity to reduce climate change risks in the near term," says atmospheric scientist Ilissa Ocko. That's because, unlike carbon dioxide, methane's warming power doesn't come from a gradual buildup over time but is almost entirely from recent emissions. Ocko identifies three main sources of methane pollution which, if addressed, could dramatically slow down the rate of global warming within years -- not decades. "This is the methane moment," Ocko says.

In 2020, China's President Xi Jinping pledged that China would both peak its emissions by 2030 and achieve net-zero emissions by 2060 -- a change that will require action at an unheard-of scale and speed. Can the country actually achieve this ambitious vision? In this forward-looking talk, environmental journalist and analyst Hongqiao Liu explores what the world's largest carbon emitter (and second-largest economy) will need to do to get there.

To fight climate change, we need to clean up the global electricity system by replacing fossil fuel power plants with clean generation -- right? Climate author Solomon Goldstein-Rose thinks we need to do much more than that. Replacement isn't enough, he explains in this compelling talk: we need to rapidly develop a new global system capable of producing 12 times the amount of clean electricity we generate today. He shares four reasons why we need that expansion -- first, to electrify everything in all parts of the world (not just the wealthy ones) -- as well as some intriguing ideas for how we can get there.

We currently have enough fossil fuels to progressively transition off of them, says climate campaigner Tzeporah Berman, but the industry continues to expand oil, gas and coal production and exploration. With searing passion and unflinching nerve, Berman reveals the delusions keeping true progress from being made -- and offers a realistic path forward: the Fossil Fuel Non-Proliferation Treaty. Learn more about the global initiative for transparency and accountability in phasing out fossil fuels forever, supported by the Dalai Lama, Nobel Prize laureates and many more.

The roadmap to ending pollution from transportation is here, says electrification advocate Monica Araya. In conversation with head of TED Chris Anderson, Araya introduces Drive Electric: a global campaign to retire the polluting internal combustion engine in time to avoid climate disaster. And she shares some exciting news: a breakthrough funding commitment from the Audacious Project that puts the project well on its way to realizing a billion-dollar plan to supercharge the transition to electric vehicles over the next five years. Learn more about the coalition of 70 organizations powering this global action -- and the role all cities, politicians and citizens can play to secure a zero-emission transport future. (This ambitious plan is a part of the Audacious Project, TED's initiative to inspire and fund global change.)

Living in a city means accepting a certain level of dysfunction: long commutes, noisy streets, underutilized spaces. Carlos Moreno wants to change that. He makes the case for the "15-minute city," where inhabitants have access to all the services they need to live, learn and thrive within their immediate vicinity -- and shares ideas for making urban areas adapt to humans, not the other way around.

What does gender equality have to do with climate change? A lot more than you might think. Empowering women and girls around the world is one of the most important ways to combat carbon pollution and is projected to reduce CO2-equivalent gases by a total of 80 billion tons. Entrepreneur, scientist and TED Fellow Rumaitha Al Busaidi looks at why women are more likely to be impacted and displaced by climate catastrophes -- and explains why access to education, employment and family planning for all women and girls is the key to our climate future.

Activism is a tough job, especially for young people yearning for immediate change -- something climate activist Melati Wijsen has learned over ten years of pushing for environmental protection, starting at age 12 in her home on the island of Bali, Indonesia. How can young changemakers acquire the skills they need and keep from burning out? Wijsen offers three pieces of advice for anybody seeking to make lasting, sustainable progress.

Agriculture has enabled the existence of civilization—today, approximately 40 percent of our planet is farmland. So it goes without saying there’s a LOT to cover when it comes to talking about modern food production. Dan starts small with something a little more digestible: which milk is best, for you and for the planet? He’ll teach us how to sip sustainably, then take us on a journey through a “perfect” sustainable farm of the future and what we can do to make it a reality. Find the text transcript for this episode at go.ted.com/TC7 TED Climate is produced and edited by Sheena Ozaki, mixed by Sam Bair, and hosted by Dan Kwartler. This episode adapted two lessons originally produced in animated form by the TED-Ed team: “Which type of milk is best for you?” written by Jonathan J. O'Sullivan and Grace E. Cunningham, with fact-checking by Joseph Isaac. And “Can we create the perfect farm?” was written by Brent Loken, with fact-checking by Eden Girma. Both pieces were produced with editorial support from Emma Bryce and Elizabeth Cox. Special thanks this season to Alex Rosenthal, Gerta Xhelo, Michelle Quint, Banban Cheng, Anna Phelan, Sarah Jane Souther, Alex Segell, Emma Taubner, Will Hennessy, Peter Zwiefel, Jonathan Mallow, Nicole Edine, Valentina Bojanini, Ama Y Adi-Dako, Erin Gregory, Micah Eames and Marie Kim for their work on this season. If you liked this episode, you can also check out “Is Drinking Milk Essential for Building Strong Bones?” on TED’s new podcast, Body Stuff with Jen Gunter.

Oil: The prehistoric source of fuel that could drive us all into extinction. We need to pivot to renewable sources of energy, like water, wind and solar to save our planet. But is it actually possible to switch ALL energy sources to these renewables? Dan looks at the problems rushing into them can pose, the barriers we currently face, and why we should all have hope for the future. TED Climate is produced and edited by Sheena Ozaki, mixed by Sam Bair, and hosted by me, Dan Kwartler. This episode adapted two lessons originally produced in animated form by the TED-Ed team. The first, Can 100% renewable energy power the world? was written by Federico Rosei and Renzo Rosei, with support from Emma Bryce and Alex Rosenthal, and fact-check by Francisco Diez. The second, Building the world's largest and most controversial power plant, was written by Alex Gendler with support from me and fact-check by Eden Girma. Special thanks to Alex Rosenthal, Gerta Xhelo, Michelle Quint, Banban Cheng, and Anna Phelan.

Trees have proven to decrease carbon in our atmosphere, keep cities clean, and even reduce anxiety … but how exactly do they do it? Dan takes us behind the bark to understand the anatomy of our gentle green giants and how every root, leaf and twig work together to improve our planet, and what we can do to help support them in the fight against climate change. TED Climate is produced and edited by Sheena Ozaki, mixed by Sam Bair, and hosted by Dan Kwartler. This episode adapted two lessons originally produced in animated form by the TED-Ed team. “What if there were 1 trillion more trees?" was written by Jean-François Bastin. "What happens if you cut down all of a city's trees?” was written by Stefan Al. Both pieces were produced with editorial support from Alex Rosenthal. Special thanks to Gerta Xhelo, Stephanie Lo, Michelle Quint, Banban Cheng, and Anna Phelan.

THINGS. They’re everywhere! And we’re constantly being pushed to buy more of them, like the hottest fashion or the latest tech. But the true cost our planet and its climate are paying is much more than the sticker price we see on the shelf. Dan reveals the hidden fees our planet is paying to make everyday items, like the shirt on your back and the phone in your pocket, and ways we can help offset them by being more sustainable shoppers. Find the text transcript for this episode at go.ted.com/TC4 TED Climate is produced and edited by Sheena Ozaki, mixed by Sam Bair, and hosted by Dan Kwartler. This episode adapted two lessons originally produced in animated form by the TED-Ed team. "The lifecycle of a t-shirt" was written by Angel Chang, and "What's in your smartphone?" was written by Kim Preshoff. Both pieces were produced with editorial support from Emma Bryce and Alex Rosenthal, and fact-checked by Francisco Diez. Special thanks to Gerta Xhelo, Michelle Quint, Banban Cheng, and Anna Phelan.

From raging wildfires in Australia to sub-zero winter storms in Texas, we’re seeing a rise in extreme weather across the globe. But how can we tell what’s caused by climate change, and what’s just bad weather? To answer this question, Dan breaks down the differences between weather and climate—what they are, how we predict them, and what those predictions can tell us. And then we visit a country that should LITERALLY be underwater to see how they’ve used human ingenuity to stay afloat, and what we can learn from them to do the same. Find the text transcript for this episode at go.ted.com/TC3 TED Climate is produced and edited by Sheena Ozaki, mixed by Sam Bair, and hosted by Dan Kwartler. This episode adapted two lessons originally produced in animated form by the TED-Ed team. "Is the weather actually becoming more extreme?" was written by Ramalingam Saravanan with support from Emma Bryce. "Why isn’t the Netherlands underwater?" was written by Stefan Al with support from Alex Gendler. Both lessons had editorial support from Dan Kwartler. Our fact-checker was Eden Girma. And special thanks to Alex Rosenthal, Gerta Xhelo, Michelle Quint, Banban Cheng, and Anna Phelan.

So, in the list of bad actors for the planet there's been the ice age, the asteroid that killed the dinosaurs, and then … us? Yeah, it really looks like that sometimes. But we've got hope! So what can humans do to steer clear of steering the planet into seemingly inevitable doom? To find out, we look at the planet from the eyes of geologists millions of years in the future—and at what the world would look like if every human on earth just … suddenly disappeared. Read the text transcript for this episode at go.ted.com/TC2 TED Climate is produced and edited by Sheena Ozaki, mixed by Sam Bair, and hosted by Dan Kwartler. This episode adapted two lessons originally produced in animated form by the TED-Ed team. "How long will human impacts last?" was written by David Biello and fact-checked by Francisco Diez. "What would happen if every human suddenly disappeared?" was written by Dan Kwartler and fact-checked by Brian Gutierrez. Both pieces were produced with editorial support from Alex Rosenthal. Special thanks to Gerta Xhelo, Stephanie Lo, Michelle Quint, Banban Cheng, and Anna Phelan.

Plastic is everywhere. We know we should cut down on it where we can, but is plastic ever the answer? In this episode, a whole world of plastic you never knew about. Starting with: which bag is best: paper, plastic, or cotton? The answer might surprise you. Dan breaks down the pros and cons of each bag, and which you should carry on your next shopping trip. Then we follow the journey of three different plastic bottles after you throw them away, shedding light on the dangers these disposables present to our world. Plus, three things you can do to put a cap on our plastic problem. You can read the full text transcript for this episode at go.ted.com/TC1 TED Climate is produced and edited by Sheena Ozaki and hosted by Dan Kwartler. Our mixer is Sam Bair. This episode adapted two lessons originally produced in animated form by the TED-Ed team. “Plastic vs Paper vs Cloth Bags” was written by Luka Seamus Wright & Imogen Ellen Napper with editorial support from Alex Gendler and Dan Kwartler, with fact-check by Eden Girma. “What really happens to the plastic you throw away?” was written by Emma Bryce, with editorial support from Alex Rosenthal and fact-check by Sarah Silvergleid. Special thanks to them, and to Gerta Xhelo, Stephanie Lo, Michelle Quint, Banban Cheng, and Anna Phelan.

On his first day as president, Joe Biden signed a letter of acceptance that set in motion the 30-day process for the United States to re-join the Paris Agreement on climate. On the day the US returns to the accord, John Kerry, the US Special Envoy for Climate, sits down with Nobel Laureate Al Gore to discuss the make-or-break decade ahead of us. Listen as Kerry lays out how the US fits into the global plan to get to net-zero emissions, explains why the COP26 UN climate conference could be humanity’s “last best hope” to build international momentum and explores the role of business and youth activists in promoting environmental justice. (This interview features an introduction from Christiana Figueres, the principal architect of the Paris Agreement.)

In this perspective-shifting talk, energy researcher Rose M. Mutiso makes the case for prioritizing Africa's needs with what's left of the world's carbon budget, to foster growth and equitably achieve a smaller global carbon footprint.

"The good news is it's now clearly cheaper to save the planet than to ruin it," says engineer and investor John Doerr. "The bad news is: we are fast running out of time." In this conversation with climate policy expert Hal Harvey, the two sustainability leaders discuss why humanity has to act globally, at speed and at scale, to meet the staggering challenge of decarbonizing the global economy (which has only ever increased emissions throughout history) -- and share helpful examples of promising energy solutions from around the world.

"Business is screwed if we don't fix climate change," says economist Rebecca Henderson. In this bold talk, she describes how unchecked capitalism destabilizes the environment and harms human health -- and makes the case for companies to step up and help fix the climate crisis they're causing. Hear what a reimagined capitalism, in which companies pay for the climate damage they cause, could look like.

Sophie Howe is the world's only future generations commissioner, a new kind of government official tasked with advocating for the interests of generations to come and holding public institutions accountable for delivering long-term change. She describes some of the people-focused policies she's helped implement in Wales, aimed at cutting carbon emissions, increasing sustainability and promoting well-being as a national goal.

Under the leadership of Lisa Jackson, Apple's environment and social VP and former head of the EPA, the company is already carbon neutral within their own corporate and retail boundaries. By 2030, Apple hopes to extend carbon neutrality to their supply chain and consumers. In conversation with urbanist and spatial justice activist Liz Ogbu, Jackson shares thoughts on leadership, tech, the environment and building a green economy.

In 2019, Amazon signed the Climate Pledge, a commitment to become a net-zero carbon business by 2040. Dave Clark, Amazon's chief of consumer retail, and Kara Hurst, head of the company's sustainability efforts, sit down with entrepreneur and activist Lindsay Levin to discuss how the company is planning to reduce its carbon footprint across all aspects of business -- while inviting other companies to join them in this transformation.

Our descendants own the future, but the decisions and actions we make now will tremendously impact generations to come, says philosopher Roman Krznaric. From a global campaign to grant legal personhood to nature to a groundbreaking lawsuit by a coalition of young activists, Krznaric shares examples of ways we can become good ancestors -- or, as he calls them, "Time Rebels" -- and join a movement redefining lifespans, pursuing intergenerational justice and practicing deep love for the planet.

"This decade is a moment of choice unlike any we have ever lived," says Christiana Figueres, the architect of the historic 2015 Paris Agreement. The daughter of Costa Rica's beloved President José Figueres Ferrer, she shares how her father's unwillingness to lose the country he loved taught her how stubborn optimism can catalyze action and change. With an unshakeable determination to fight for the generations that will come after us, Figueres describes what stubborn optimism is (and isn't) -- and urges everyone to envision and work for the future they want for humanity.

The global climate crisis will require us to transform the way we act, says His Holiness Pope Francis. Delivering a visionary TED Talk from Vatican City, the spiritual leader proposes three courses of action to address the world’s growing environmental problems and economic inequalities, illustrating how all of us can work together, across faiths and societies, to protect the Earth and promote the dignity of everyone. “The future is built today,” he says. “And it is not built in isolation, but rather in community and in harmony.” (In Italian with English voiceover)

"We start this new decade knowing that it is the most consequential period in history," says Prince William, The Duke of Cambridge. Inspired by President John F. Kennedy's "Moonshot," he calls on everyone to rise to our greatest challenge ever: the "Earthshot." A set of ambitious objectives for the planet, the Earthshot goals seek to protect and restore nature, clean the air, revive oceans, build a waste-free world and fix the climate -- all in the next decade. To do it, we'll need people in all corners of the globe working together with urgency, creativity and the belief that it is possible to repair the Earth.

If we don’t act now on climate change, this coming century may be one of humanity’s last, says António Guterres, Secretary-General of the United Nations. As the world recovers from the COVID-19 pandemic, Guterres urges us to use this moment to rebuild with ambitious climate action in mind -- and lays out a blueprint for getting companies, governments and countries to reach net zero carbon emissions by 2050. “We can only win the race to zero together,” he says. “I urge you all to get on board.”

The secret to using trees to fight climate change is knowing which ones to plant, and where. Ecologist Thomas Crowther — setting the record straight on his own research that led to the viral “One Trillion Trees” movement — introduces Restor, an expansive, informative platform built to enable everyone, anywhere to join and help restore the natural glory of Earth’s biodiverse ecosystems.

"History has shown us that in moments of crisis, society can truly transform," says environmental educator Severn Cullis-Suzuki. Nearly 30 years ago, at just 12 years old, she spoke at the Rio Earth Summit in hopes of reversing the planet's slide into ecological disaster. Some at the summit listened and took radical action, but for the rest of the world, it was business, politics and full-steam-ahead economic growth. Now, Cullis-Suzuki shares another warning about the future, this time informed by the COVID-19 crisis -- and urges us all to make our actions on climate change reflect our words.

“For the first time, we are forced to consider the real risk of destabilizing the entire planet,” says climate impact scholar Johan Rockström. In a talk backed by vivid animations of the climate crisis, he shows how nine out of 15 big biophysical systems that regulate the climate -- from the permafrost of Siberia to the great forests of the North to the Amazon rainforest -- are at risk of approaching tipping points, which could make Earth largely uninhabitable for humanity. Hear his plan for putting the planet back on the path of sustainability over the next 10 years -- and protecting the future of our children.

With the ambitious goal of becoming the first carbon-free continent by 2050, the European Union has committed to creating a greener world for future generations. In this bold talk, Ursula von der Leyen, President of the European Commission, details the challenges and opportunities that come with transitioning an entire continent to clean energy -- and shows why fixing climate change calls for everyone to take action.

Why has there been so little mention of saving Black lives from the climate emergency? For too long, racial justice efforts have been distinguished from climate justice work, says David Lammy, Member of Parliament for Tottenham, England. In a stirring talk about building a new movement to care for the planet, Lammy calls for inclusion and support of Black and minority leadership on climate issues and a global recognition we can't solve climate change without racial, social and intergenerational justice.

People around the world are demanding clean air -- and cities are starting to respond, says electrification advocate Monica Araya. She takes us on a world tour of urban areas that are working to fully electrify their transportation systems over the next decade, shifting to emission-free motorcycles, cars, buses, ferries and beyond. See what a future without the internal combustion engine could look like -- and what it will take to get there.

Introducing Countdown: an exciting new global initiative from TED to champion and accelerate solutions to the climate crisis, turning ideas into action. The goal: To build a better future by cutting greenhouse gas emissions in half by 2030 in the race to a zero-carbon world – a world that is safer, cleaner and fairer for everyone. On this podcast, you'll find the most powerful ideas from TED and partners around the climate crisis. Every organization, company, city and nation and citizens everywhere are invited to collaborate with Countdown and take action on climate. It is a movement open to everyone – and everyone has a vital role to play. So head over to countdown.ted.com to find out more and get involved.