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.

WWF's Global Marine Programme works to increase international attention for ocean conservation and protect the high seas.

These international waters, comprising 64% of the oceans (half the

WWF's Global Marine Programme works to increase international attention for ocean conservation and protect the high seas.

These international waters, comprising 64% of the oceans (half the planet), lie beyond national jurisdiction and are open-access common areas. For more information, visit panda.org/highseas.

James Glattfelder, a complexity theorist, studies how interconnected systems, like a bird swarm, are more than the sum of their

James Glattfelder, a complexity theorist, studies how interconnected systems, like a bird swarm, are more than the sum of their parts. He applies this theory to the global economy, offering insights into its intricate workings.

Glattfelder's groundbreaking study reveals how control is concentrated among a surprisingly small number of entities. This significant power concentration leaves the entire global economy vulnerable. His findings were presented at TEDxZurich and published on February 13, 2013.

Mary C. Gentile, Director of Giving Voice to Values at Babson College, discusses her expertise in creating curriculum for values-driven leadership development. Learn more about her