Witness the unveiling of Countdown, a major global campaign to cut greenhouse gas emissions. TED has partnered with scientists, policy makers, organizations, activists and more to create an

Witness the unveiling of Countdown, a major global campaign to cut greenhouse gas emissions. TED has partnered with scientists, policy makers, organizations, activists and more to create an initiative that everyone in the world can be part of. Check out http://countdown.ted.com to learn how you can get involved — and help turn the tide on climate. [Note: there are two unusual features of this TED Talk. One, it's much longer than our normal, extending a full hour. Two, it's made up of contributions from more than a dozen people, including UN Secretary-General Antonio Guterres, Al Gore, Katharine Hayhoe, Jimmy Kimmel and Yuval Noah Harari, among others. We're putting it out there because the topic deserves this kind of prominence.]

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Former Portland Mayor Sam Adams, Noah Siegel (former Director of International Affairs), and Sean Robbins (Greater Portland Inc. president/CEO) discuss the region's competitive advantage in

Former Portland Mayor Sam Adams, Noah Siegel (former Director of International Affairs), and Sean Robbins (Greater Portland Inc. president/CEO) discuss the region's competitive advantage in building green cities.

This discussion is drawn from "The Metropolitan Revolution: How Cities and Metros Are Fixing Our Broken Politics and Fragile Economy," a Brookings Institution publication. Download the accompanying iPad app.

On this edition for Saturday, November 6, 2021 President Biden’s $1 trillion infrastructure plan finally makes its first steps forward after the House vote, people protest around the

On this edition for Saturday, November 6, 2021 President Biden’s $1 trillion infrastructure plan finally makes its first steps forward after the House vote, people protest around the world demanding climate action while communities explore ways to develop climate resilience.

Nick Offerman

Marshall Burke, Noah Diffenbaugh/Stanford University

Behavioral Scientist, Gabrielle Wong-Parodi and Ortensia Lopez

Gabrielle Wong-Parodi is a Professor in the Department of Earth System Science and Center Fellow at the Woods Institute for the Environment at Stanford University.

Yuval Noah Harari argues our relationship with information is akin to our relationship with food: too much "junk" can be harmful. Is it time for an information diet?

Catch the full

Yuval Noah Harari argues our relationship with information is akin to our relationship with food: too much "junk" can be harmful. Is it time for an information diet?

Catch the full conversation with Yuval Noah Harari on October 18th.