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Cities with a tree canopy above the street are very nice. Chlorophyll in plants reflects infrared. Trees are de facto self-replicating self-assembling solar pow
by supertrope 3y ago
Cities with a tree canopy above the street are very nice. Chlorophyll in plants reflects infrared. Trees are de facto self-replicating self-assembling solar powered nanomachinery that don’t generate any toxic manufacturing waste.
The tops of buildings can use titanium dioxide white paint.
- mensetmanusman 3y agoTiO2 white doesn’t reflect nearly enough heat energy though.
- colanderman 3y agoIt's also been subject to shortages the past few years.
- RetroTechie 3y agoAny white reflects a lot more heat than tar or tiled roofs, though. All the 'little' bits help. If nothing else, to reduce A/C power draw.
- mensetmanusman 3y agoReflection is half the story, these films are also designed to emit their heat energy through the atmospheric window and therefore contribute to active global cooling, not just ‘heating up less fast’.