Half a croissant, on a plate, with a sign in front of it saying '50c'
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Inexact change.

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science: energy: thermal: waste heat
Ideas are sorted alphabetically.
Ideas in bold have been created this week.
 (+7)  Augmented Updraft Tower and Battery 
 (+14)(+14)  Base Power Desalination 
 (+6)  candle powered light 
 (+5, -3)  Chimney power 
 (+8, -1)  Compressed Air Car with Cogeneration 
 (+2, -4)  Discursive Laws of Thermodynamics 
 (+2, -8)(+2, -8)  Human Heat Powered House 
   Mono-Turbine Tornado Generator 
 (+5, -1)  Neighborhood Updraft Tower 
 (+2)  Septic Thermal Power 
 (+4, -2)  Theogermal energy 
 (+2)  Underground, Overground, Warmbling Free 
   Vacuum Engine 
 (+2)  Waste heat thermal elevator 


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