Apple have just opened their Fifth Avenue retail store to much fanfare. But we prefer their Michigan Avenue store in Chicago. 'Coz it's the one with the 2,400 ft2 (223m2) green roof. This was created with 302 four-inch deep GreenGridÂ® modules, that were installed over a 12 hour period. Sedum kamtschaticum was the species of grass (er, well, to be more accurate, a perennial succulent groundcover) selected, because it takes "little maintenance, [and] is very hardy in the Chicago climate." But in some ways the best thing about this green roof may just be that its prominent presence can be seen by surrounding offices. It might just get folk thinking about the disconnect between our built and natural environment. ::GreenGrid via MacDailyNews.