Guhumanya ikirere mu mijyi minini y'Ubushinwa (ndetse no hanze yacyo) ni ikibazo gihangayikishije.
Pekin yinjiye muri 2017 yandika urwego rw’umwanda inshuro 24 ntarengwa n’umuryango w’ubuzima ku isi wangiza cyane ubuzima rusange. Ikibazo ntikiterwa gusa na miliyoni zimodoka zizenguruka mumurwa mukuru wUbushinwa, ahubwo nanone biterwa numubare munini wamashanyarazi atanga amashanyarazi i Beijing.Iyi videwo ya timelapse yanditswe na Chas Papa, injeniyeri w’Ubwongereza uba mu Bushinwa, imaze kujya ahagaragara kandi ikerekana neza aho umwanda uhagaze. Hano hari iminota 20 yegeranye mumasegonda 12 gusa:
Usibye Beijing, imijyi igera ku 20 yo mu Bushinwa iri ku cyerekezo cya orange ku bijyanye n’umwanda, indi mirongo ibiri ikaburira umutuku.
Turabibutsa ko zimwe mu murwa mukuru w'isi, nka Paris, Madrid, Atenayi n'Umujyi wa Mexico, zizabuza kwinjira no gukwirakwiza imodoka za Diesel kugeza mu 2025, mu rwego rwo kugabanya ihumana ry’ikirere.