TED (Technology, Entertainment and Design) is a global set of conferences owned by the private non-profit Sapling Foundation, formed to disseminate "ideas worth spreading."
Here is a selection of TED talks on design relevant to Appropedia covering design and engineering for global development.
Amos Winter: The cheap all-terrain wheelchair
Cameron Sinclair: A call for open-source architecture
Jane Chen: Incubators for premature babies
Amy Smith: Simple designs that could save millions of childrens' lives
Emily Pilloton: Teaching design for change
Jennifer Pahlka: Coding a better government
Michael Pritchard: How to make filthy water drinkable
Neil Gershenfeld: The beckoning promise of personal fabrication
Sam Hamner - Design for Extreme Affordability
Jeff Chapin: Design As a Tool for Better Conversations
Saul Griffith on everyday inventions