Canjin yanayi. Waɗannan kalmomi ne guda biyu waɗanda, kodayake sababbi ne, suna nufin al'amuran duniya waɗanda ke faruwa tun asalin duniya. Koyaya, ba a taɓa samun wani nau'in da zai iya yin tasiri sosai a duniya kamar yadda mutane suke yi ba.
Mu tsaran hankali ne. Mun yi nasarar mallakar dukkan bangarorin duniya, kuma yanzu muna kan hanyar zuwa biliyan 10. Amma a farashin menene? Wasu na gaskanta cewa daidaitaccen yanayi ya lalace kuma muna shirin shiga sabon zamanin ilimin ƙasa: Holocene. A cewar wani binciken, sauyin yanayi yana saurin canzawa sau 170 saboda ayyukan mutane fiye da karfin halitta. Wane sakamako wannan zai iya haifarwa? Ba a sani ba.
Binciken, daga Jami'ar (asa ta Australiya (ANU) kuma aka buga a Binciken Anthropocene, yana nazarin Duniya a matsayin hadadden tsari kuma yana kimanta tasirin da dan Adam ke da shi a yanayin tafiya. Don haka, masu binciken sun sami damar gano hakan hayaki mai gurbataccen hayaki da mutane ke fitarwa a cikin shekaru 45 da suka gabata sun ƙara saurin tashi zuwa 1,7ºC a kowane karni.
Duk da yake wannan baya nufin cewa ƙarfin halitta ba sa ba da gudummawa. Farfesa Will Steffen ya fada a cikin wata sanarwa cewa "dangane da tasirin su a cikin wannan kankanin lokaci, yanzu sun zama ba a kula dasu idan aka kwatanta da namu tasirin".
Shin za a iya yin wani abu don hana lamarin daga yin muni? A cewar Steffen, ee: yin fare akan tattalin arziƙin watsi da siliki. Amma lokaci na tafiya da sauri. Nan da shekarar 2050, ana sa ran yawan mutane ya kai biliyan tara. Peoplearin mutane na nufin ƙarin buƙatun albarkatu, wanda babu makawa zai iya haifar da ma da mummunan tasiri ga duniyar, sai dai in hanyar rayuwar mu ta canza.
Kuna iya karanta karatun a nan (cikin Turanci).