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.

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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.

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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.

For a chance to give your own TED Talk, fill out the Idea Search Application: ted.com/ideasearch.

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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.

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"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.

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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.

For a chance to give your own TED Talk, fill out the Idea Search Application: ted.com/ideasearch.

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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.

For a chance to give your own TED Talk, fill out the Idea Search Application: ted.com/ideasearch.

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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)

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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.

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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.

For a chance to give your own TED Talk, fill out the Idea Search Application: ted.com/ideasearch.

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