How to attract attention of pedestrians?

How could we make passing pedestrians stop and look at something? One solution is to apply technology. For instance, tactile pavings or tactile ground surface indicators tell them when to cross roads. Another solution is to apply design. While I stayed in Curitiba, Brazil, fire extinguishers always attract my attention successfully. This is because they…

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How could we design a better fire extinguisher?

Since we spend most of our time in buildings, we are literally surrounded by fire extinguishers. It consists of a hand-held cylindrical pressure vessel containing an agent which can be discharged to extinguish a fire (Wikipedia). In general, we do not pay attention to them until needed. For me, I have never used any fire extinguisher…

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