Esigabeni esingezansi, yimiphi imithombo emikhulu yokukhishwa kwe-methane?
Context:Ukukhishwa kwegesi ebamba ukushisa okubangelwa imisebenzi yabantu kukhulisa umphumela wokushisa okushisayo, okwenza kube nokuguquka kwesimo sezulu. Okuningi kuyi-carbon dioxide evela ekushiseni izinto zokubasa ezimbiwa phansi: amalahle, uwoyela negesi yemvelo. Izikhuthazi ezinkulu zihlanganisa amalahle aseChina nezinkampani ezinkulu zikawoyela negesi. Ukukhishwa okubangelwa abantu kuye kwandisa isikhutha somkhathi cishe ngamaphesenti angu-50 uma kuqhathaniswa nezinga langaphambi kwenkathi yezimboni. Amazinga akhulayo okukhishwa kwawo ayehlukahluka, kodwa ayefana phakathi kwawo wonke amagesi abamba ukushisa (ama-GHG). Ukukhishwa kwamagesi ngonyaka ka-2010 kwakulinganiselwa kumathani ayizigidi eziyizinkulungwane ezingu-56 ngonyaka, okuphakeme kunanoma yimuphi umnyaka eyishumi eyedlule.  Ukukhiqizwa kukagesi, ukushisa kanye nezokuthutha yizona zinto ezikhipha kakhulu; amandla aphelele anesibopho cishe sama-73% okukhishwa. Ukugawulwa kwamahlathi nezinye izinguquko ekusetshenzisweni komhlaba nakho kukhipha isikhutha ne-methane. Umthombo omkhulu wokukhishwa kwe-methane eyenziwe umuntu ezolimo, kulandelwa eduze ukukhishwa kwegesi kanye nokukhishwa okuphunyukayo okuvela embonini yamafutha. Umthombo omkhulu wemethane kwezolimo yizilwane ezifuywayo. Inhlabathi yezolimo ikhipha i-nitrous oxide ngokwengxenye ngenxa yomanyolo. Ngokufanayo, amagesi ane-fluorine avela kuma-refrigerants adlala indima enkulu ekungcolisweni okuphelele kwabantu.
Umthombo omkhulu wokukhishwa kwe-methane ezimbonini. Ukukhishwa kwegesi nokukhishwa kwayo embonini yamafutha emvelo kungemithombo emikhulu elandelayo.