Megan AlaskanWouldn’t it be nice if, when visiting a new city, you could simply get directions from a nearby urban object instead of unfolding and puzzling over a map? A concept called the EcoSign would turn ubiquitous manhole covers into rainwater-powered... moreWouldn’t it be nice if, when visiting a new city, you could simply get directions from a nearby urban object instead of unfolding and puzzling over a map? A concept called the EcoSign would turn ubiquitous manhole covers into rainwater-powered information centers that can give you directions. The only problem is, manhole covers tend to be in the middle of busy streets – not exactly safe places for tourists to congregate.
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