Nonungiyar mai zaman kanta mai zaman kanta Aikin Bayyana Carbon (CDP) ya shirya rahoton Rahoton Canjin Yanayi na Duniya na 500 na 2013 a ciki ta bayyana kamfanoni goma da suka fi gurbatar yanayi a duniya da munanan ayyukan muhalli na kowane ɗayansu. Kimanin kamfanoni 403 ne suka shiga rahoton na bana
A cewar wannan kungiyar, duk wadannan kamfanonin an sadaukar da su ne don yin amfani da albarkatun kasa ba tare da rage tasirin yadda ya kamata ba. Suna haifar da hayaki mai yawa kuma suna nuna rashin ƙwarin gwiwa don haɗa dorewa azaman mai mai da hankali ga ci gaban kamfanin. Ba tare da ci gaba ba, rahoton ya nuna cewa manyan kamfanoni 500 a duniya suna da alhakin kusan kashi uku cikin uku na metric tan miliyan 3,6 na hayaki mai gurbata muhalli.
Kamfanoni goma da suka fi gurɓata gurɓatattun abubuwa sune:
- Wal - Mart, babban kamfani na uku mafi girma a duniya wanda ke aiki da sarƙoƙin ragin ɗakunan ajiya da kulab ɗin adana kayayyaki
- Exxon Mobil, babban kamfanin mai kuma wanda yake da babbar kasuwa a duniya a wannan lokacin
- Bank of America, kamfanin banki na biyu mafi girma a duniya
- Bayer, babban kamfani a duniyar magunguna
- Waliyi - Gobain, Kamfanin Faransa wanda ke kera kayan aiki da kayan aiki mai inganci
- Samsung, Kamfanin lantarki na Koriya ta Kudu
- Arcelor Mittal, kamfanin karfe mafi girma a duniya
- Verizon, daya daga cikin manyan wayoyin salula a duniya
- RWE, Kamfanin kasar Jamus a bangaren makamashi
- Carnival, kamfanin jirgin ruwa
CO2 da waɗannan kamfanoni suka fitar a cikin shekaru huɗu ya karu da 1,65% tare da jimlar tan miliyan 2,54. A cewar kwararrun da suka shirya wannan rahoto, kowanne daga cikin wadannan kamfanoni ya kamata su inganta ayyukansu a bangaren muhalli, baya ga samun tallafi daga gwamnatoci idan hakan ta faru.
Daga cikin kamfanoni 50 da suka fi gurɓata mun sami sama da duk mai, makamashi, siminti, ƙungiyar ƙarfe ko ƙungiyoyin ma'adinai. Daga cikin wadannan, 16 Amurkawa ne, ‘yan Burtaniya shida,‘ yan Canada biyar, Faransawa biyar, Jamusanci biyar, ‘yan Brazil biyu,‘ yan Japan biyu, Spanish biyu, Switzerland biyu, da kuma daya daga Australia, Italiya, Luxembourg, Netherlands, Norway, Afirka ta Kudu da Koriya ta Kudu .
Hoto - Fadakarwa kan muhalli