Jessica Green: We're covered in germs. Let's design for that.

When asked to build housing for 100 families in Chile ten years ago, Alejandro Aravena looked to an unusual inspiration: the wisdom of favelas and slums. Rather than building a large building with small units, he built flexible half-homes that each family could expand on. It was a complex problem,…

John Hunter puts all the problems of the world on a 4'x5' plywood board -- and lets his 4th-graders solve them. At TED2011, he explains how his World Peace Game engages schoolkids, and why the complex lessons it teaches -- spontaneous, and always surprising -- go further than classroom lectures…

Journalist John Hockenberry tells a personal story inspired by a pair of flashy wheels in a wheelchair-parts catalogue -- and how they showed him the value of designing a life of intent. (From The Design Studio session at TED2012, guest-curated by Chee Pearlman and David Rockwell.)

Architecture can bring people together, or divide them -- witness the skyscraper, costly, inefficient, and only serving small portions of the community. At TEDxPortofSpain, Mark Raymond encourages city governments to let go of their old notions of success and consider the balance of environment, economy, and society to design cities…

What does your chair say about what you value? Designer Sebastian Deterding shows how our visions of morality and what the good life is are reflected in the design of objects around us.