"Reprogramming" existing city infrastructures through innovative solutions could help improve access to natural resources such as water, energy and sunlight, writes Scott Burnham. In Lima, Peru, for instance, a humidity collector and water purifier were attached to a billboard, providing about 96 liters of clean water each day. In Umea, Sweden, where sunlight is in scarce supply for half the year, 30 bus stops have been equipped with UV light therapy tubes to give residents a boost of energy.

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