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   _____   __   __   _    _      ___      ______  
  / ___//  \ \\/ // | \  / ||   / _ \\   /_____// 
  \___ \\   \ ` //  |  \/  ||  / //\ \\  `____ `  
  /    //    | ||   | .  . || |  ___  || /___//   
 /____//     |_||   |_|\/|_|| |_||  |_|| `__ `    
`-----`      `-`'   `-`  `-`  `-`   `-`  /_//     
                                         `-`

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Text this: Energy and material flows of megacities