From video-enabled visual interpretation to 3D audio effects, smartphone wayfinding apps have a lot to offer Blind users. But these new features are no substitute for public infrastructure — digital or otherwise — that accounts for nonvisual navigation of the built environment.
An artist and a historian talk trees: What they mean, and what it takes to get city-dwellers to see them clearly.
A huge range of emergent technologies give police new ways to gather data and surveil. What's on the market?