Akatswiri pa zaumoyo wa dziko lathu ali ndi mantha kwambiri ndi tsogolo. Amatha kuona bwino lomwe kugwa kwa chitukuko cha dziko lonse chifukwa cha mavuto osiyanasiyana okhudzana ndi chilengedwe.
"Tonse tili ndi mantha," anatero Paul Ehrlich, pulezidenti wa Center for Conservation Biology pa yunivesite ya Stanford.
"Koma tiyenera kunena zoona pazomwe zikuchitika ndikutsutsa anthu kuti achitepo kanthu kuti apewe," Ehrlich adauza IPS.
Kugwa kwapadziko lonse kwa chitukuko cha anthu kukuwoneka kuti kuyenera kuchitika, alemba Ehrlich ndi mnzake Anne Ehrlich m'nyuzipepala yotchuka ya sayansi, Proceedings of the Royal Society.
Kugwa uku kudzakhala ngati "...kuwonongeka pang'onopang'ono chifukwa njala, miliri ndi kusowa kwa zinthu kumayambitsa kusokonezeka kwa ulamuliro pakati pa mayiko, mogwirizana ndi kusokonezeka kwa malonda ndi mikangano pazovuta zomwe zikuchulukirachulukira", akulemba.
Panopa anthu mabiliyoni awiri ali ndi njala. Kupanga chakudya ndi bizinesi yayikulu kwambiri ya anthu ndipo ikukhudzidwa kale ndi nyengo ndi zovuta zina zachilengedwe. โPalibe chitukuko chimene chingapeลตe kugwa ngati chikulephera kudyetsa anthu ake,โ akutero olembawo.
Kusokonekera kwanyengo, kuchuluka kwa acidity m'nyanja, madera akufa m'nyanja, kutha kwa madzi apansi panthaka komanso kutha kwa zomera ndi nyama ndizomwe zimayendetsa kugwa komwe kukubwera. Nkhani yokambidwa ndi anzawo yakuti โKodi kugwa kwa chitukuko cha padziko lonse kungapewedwe?โ lofalitsidwa sabata ino.
Akatswiri ambiri odziwa za kayendedwe ka nthaka anafunsidwa polemba pepala lamasamba 10 lomwe lili ndi maumboni oposa 160.
"Tinalankhula ndi akatswiri ambiri otsogola padziko lonse lapansi kuti awonetse zomwe zikuchitika," adatero Ehrlich, yemwe ndi katswiri wamaphunziro a zamoyo komanso wopambana mphoto zambiri zasayansi.
Chowonadi chathu ndichakuti kugwiritsa ntchito mopitilira muyeso kwachilengedwe komanso kuwonongeka kwa ntchito zochirikizira moyo kumapereka njira kuti tifunika theka lina la dziko lapansi kuti tipitirizebe. Ndipo ndizo ngati mabiliyoni asanu ndi awiri onse akhalabe pamiyezo yawo yamakono, a Ehrlichs alemba.
Ngati aliyense akanakhala ngati nzika ya US, mapulaneti ena anayi kapena asanu akadafunika.
Chiwerengero cha anthu padziko lonse chikuyembekezeka kuwonjezeka ndi 2.5 biliyoni pofika chaka cha 2050. Sizotengera katswiri kuti anene kuti kugwa kwa chitukuko sikungalephereke popanda kusintha kwakukulu.
Tikuyang'anizana ndi tsogolo lomwe mabiliyoni ambiri adzafa, komabe zochepa zomwe zikuchitika kuti tipewe tsoka linalake, adatero.
"Opanga ndondomeko ndi anthu sachita mantha ndi izi chifukwa alibe chidziwitso kapena chidziwitso cha momwe dziko lathu limagwirira ntchito," adatero.
Mwezi wa Marichi watha, asayansi padziko lonse lapansi adapereka kuwunika koyamba kwa "dziko lapansi" pa "Planet Under Pressureโ msonkhano ku London. Akatswiri opitilira 3,000 adatsimikiza kuti anthu akukumana ndi "vuto lapadziko lapansi" ndipo panalibe nthawi yotaya popanga kusintha kwakukulu.
Mu 2010, Mgwirizano wa mabungwe asayansi padziko lonse lapansi ndi mabungwe asayansi apadziko lonse lapansi ochokera kumayiko 141 anachenjeza kuti "kupitiriza kugwira ntchito kwa dziko lapansi monga tikudziwira kuti kuli pachiwopsezo".
"Zinthu ndizovuta kwambiri komabe palibe chilichonse patsamba loyamba kapena pamitu ya atsogoleri adziko," adatero Pat Mooney, wamkulu wa bungwe lapadziko lonse la chilengedwe. Gulu la ETC.
"Kusowa chidwi ndi tsoka," Mooney adauza IPS m'mbuyomu.
Mayankho alipo ndipo afotokozedwa mwachidule mu pepala la Ehrlich. Komabe, izi zimafuna kusintha kwakukulu. Mayiko onse akuyenera kuchita zonse zomwe angathe kuti achepetse kutulutsa kwawo kwamafuta oyambira pansi posatengera zochita kapena kusowa kwawo ndi dziko lina lililonse, adatero.
Kutetezedwa kwamitundumitundu yapadziko lapansi kuyenera kukhala pachimake pazosankha zonse zachuma ndi zachuma. Njira zamadzi ndi mphamvu ziyenera kukonzedwanso. Ulimi uyenera kuchoka pakupanga mafuta ochulukirapo m'mafakitale kupita kuzinthu zachilengedwe zopangira chakudya. Kulimba mtima ndi kusinthasintha zidzakhala zofunikira kuti chitukuko chikhalepo.
Chofunikira pakuthana ndi vuto lomwe linali lisanachitikepo ndi "... kudziwona tokha okhazikika m'Chilengedwe osati olekanitsidwa mwanjira ina ndi zinthu zamtengo wapatali zomwe zimachirikiza moyo wonse", alemba motero Prince Charles waku England pothirira ndemanga pa pepala la Ehrlich.
"Kupitiliza ndi" bizinesi monga mwachizolowezi "ndikudzipha pamlingo waukulu," adatero Prince Charles.