Urbanist Jeff Speck addresses the problem of suburban car dependence, which he calls "a gas-belching, time-wasting, life-threatening prosthetic device." He proposes making cities more walkable and

Urbanist Jeff Speck addresses the problem of suburban car dependence, which he calls "a gas-belching, time-wasting, life-threatening prosthetic device." He proposes making cities more walkable and pleasant to free people from reliance on cars.

Speck highlights Portland, Oregon's early commitment to bicycles and walkability in the 1970s as a successful model. This TEDTalks presentation, published on October 14, 2013, advocates for Portland's "new way" of urban development.

Find closed captions and translated subtitles at http://www.ted.com/translate.

World record-holding free diver Tanya Streeter discusses her

World record-holding free diver Tanya Streeter discusses her experiences with plastic pollution in our oceans.

She offers a unique perspective on this critical environmental challenge.

The Nenets are nomadic reindeer herders in North-West Siberia, relying on their herds for food, clothes, transport, and shelter. They have migrated their ancestral lands for over a millennium.

The Nenets are nomadic reindeer herders in North-West Siberia, relying on their herds for food, clothes, transport, and shelter. They have migrated their ancestral lands for over a millennium. This region and its inhabitants now face severe threats from climate change, with rising temperatures accelerating the melting of Russia's ancient permafrost.

Siberia, stretching from the Arctic Ocean to Kazakhstan, Mongolia, and China, is immense. Covering 13.1 million square kilometers, it comprises 77% of Russia's land area but is home to only 40 million people, 27% of the nation's population.

Published on June 7, 2013, this testimony illustrates how a small farmer in El Salvador preserves biodiversity and combats hunger through seed saving and exchange.

This practice aligns

Published on June 7, 2013, this testimony illustrates how a small farmer in El Salvador preserves biodiversity and combats hunger through seed saving and exchange.

This practice aligns with the 2013 commitment of Bajo Lempa communities in El Salvador to agroecology. Their focus encompasses protecting local seeds, defending soil, and preserving water sources.

Published November 19, 2013, this data visualization illustrates climate change effects. It was produced by the International Geosphere-Biosphere Programme and Globaia, with funding from the UN

Published November 19, 2013, this data visualization illustrates climate change effects. It was produced by the International Geosphere-Biosphere Programme and Globaia, with funding from the UN Foundation.

The visualization summarizes key findings from the Intergovernmental Panel on Climate Change's (IPCC) Fifth Assessment Report (Working Group I summary for policymakers, Physical Science Basis). All presented facts are directly derived from the IPCC summary.

Kelly Matheson, representing WITNESS, delivers a talk on atmospheric trust litigation (ATL) and the fundamental right to a sustainable living environment. Her presentation highlights critical

Kelly Matheson, representing WITNESS, delivers a talk on atmospheric trust litigation (ATL) and the fundamental right to a sustainable living environment. Her presentation highlights critical legal approaches to climate change.

Through compelling personal stories and illustrative videos, Matheson vividly demonstrates how climate change profoundly affects young people globally. This talk was originally published on August 2, 2012.

Stephen Watson and Isabel Hoffmann present a video showcasing TellSpec's significant progress. They detail advancements made in just three months since its

Stephen Watson and Isabel Hoffmann present a video showcasing TellSpec's significant progress. They detail advancements made in just three months since its Indiegogo crowd-funding campaign began in October 2013.

The presentation highlights improvements in the scanner and app's size, usability, portability, user interface, and input capabilities. This video was published on December 31, 2013.

The world's largest industrial energy project is causing extensive environmental devastation in Alberta, Canada. This operation extracts crude oil from bitumen beneath the pristine boreal forest,

The world's largest industrial energy project is causing extensive environmental devastation in Alberta, Canada. This operation extracts crude oil from bitumen beneath the pristine boreal forest, impacting land, water, and air across an area equivalent to Florida or England.

Both industry and government prioritize financial gain over public health and environmental security. This critical assessment was originally uploaded on April 27, 2011.

Stéphane Le Goaster, an engineer with the French forest administration, explains how climate change considerations are integrated into forest management practices across France.

This

Stéphane Le Goaster, an engineer with the French forest administration, explains how climate change considerations are integrated into forest management practices across France.

This discussion was originally uploaded on January 20, 2010.