Popular Science - - BUILT TO OUTLAST: POPSCI 2018 -

Cities are dense with im­per­me­able side­walks and streets, so the con­crete jun­gle doesn’t ex­actly drink up ex­cess wa­ter dur­ing storms. The re­sult: de­struc­tive flash floods. To help, Dan­ish ar­chi­tec­ture firm Tredje Natur de­vel­oped Cli­mate Tiles, a mod­u­lar paving sys­tem that col­lects and dis­trib­utes rain­wa­ter. The slabs re­sem­ble a nor­mal paved sur­face but sport small per­fo­ra­tions that fun­nel storm runoff into hor­i­zon­tally con­nected chan­nels. The sys­tem cap­tures wa­ter from roofs, streets, and park­ing lots, and de­liv­ers it to nearby per­me­able land­scapes—such as gar­den boxes or park spa­ces—where it can be ab­sorbed. Tredje Natur al­ready gave a few Copen­hagen side­walks a face-lift this year to test out the tiles. But even be­fore that ex­per­i­ment is fin­ished, Toronto and sev­eral other cities have put in re­quests for the rain-drain­ing ma­te­rial.

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