Peter Calthorpe, urban designer uye munyori we "Urbanism munguva yekuchinja kwemamiriro ekunze", yakashanda pane mamwe makuru ekugadzira mapurojekiti emuguta muUnited States mumakore makumi maviri apfuura, munzvimbo dzinosanganisira Portland, Salt Lake City, Los Angeles uye mushure medutu kumaodzanyemba kweLouisiana. Vakataura kuti chinhu chakanakisa chingaitwa nemaguta kuchengetedza kutonhorera kudyara miti.
"Zviri nyore." Calthorpe akadaro. "Ehe, unogona kuita matenga machena uye matenga egirinhi ... asi nditende, ndiyo canopy yemumugwagwa inoita mutsauko wese."
Nzvimbo dzine miti mizhinji dzeguta dzinogona kugadzira zvitsuwa zvinotonhorera mukati meguta. Uyezve, nzira dzine mumvuri dzinokurudzira vanhu kufamba pane kutyaira. Uye mota shoma zvinoreva kushomeka kwekushandisa mumigwagwa mikuru uye nzvimbo dzekupaka, izvo zvisingangotora kupisa chete asiwo zvinobatsira mukuburitsa gasi regreenhouse, akadaro.