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Science is reinventing play, from extreme sports to gamification to ridiculous roller coasters to the playgrounds of tomorrow, and this issue is chock full of fun. Also, on a less fun note: Did global warming destroy my hometown?
We need to utilize LED technologies as such, and quit this silly 1890's Edison screw in form factor. True, there is quite a legacy installation set out there. But lights must be designed by architects and installed when the house is built, lasting until the house is recycled some distant time in the future. Only then will optimized LED (and similar) technologies be able to 'strut their stuff'.
I mean, 110 Volts might be reconsidered as well. LED's use low voltage. Romex may be overkill.