Design is all around us, but much of it could be better, bolder, more elegant. This episode, TED speakers on the essence of good design in buildings, brands, the digital realm and the natural world. Guests include designer Tony Fadell, architect Marc Kushner, Airbnb co-founder Joe Gebbia, design critic Alice Rawsthorn, and science writer Janine Benyus. (Original broadcast date: May 20, 2016).