Shin kun taɓa yin tunanin ko wani nau'in zai samo asali don samun hankali na matakin ɗan adam tun bayan barin duniyar nan? Ba mu da tabbas game da ku, amma koyaushe muna tunanin raccoons a cikin wannan rawar.
Watakila shekaru miliyan 70 daga yanzu, dangin fuzzballs masu rufe fuska za su taru a gaban Mt. Rushmore, suna fara wuta da manyan yatsan yatsa kuma suna mamakin abin da halittu suka sassaƙa wannan dutse. Amma, jira minti daya, Mt. Rushmore zai daɗe haka? Kuma idan muka zama raccoons fa?
A wasu kalmomi, idan wani nau'i na fasaha ya mamaye duniya a lokacin dinosaur, shin za mu san game da shi? Idan kuma ba haka ba, ta yaya za mu san hakan bai faru ba?
Ƙasa kafin lokaci
An san shi da Hasashen Silurian (kuma, don kada ku yi tunanin masana kimiyya ba ma'aikata ba ne, ana kiran shi bayan kisan Dokta Wanene halittu). Ainihin yana iƙirarin cewa ’yan Adam ba su ne nau’in rayuwa na farko da suka samo asali a duniyarmu ba kuma cewa da a ce akwai abubuwan da suka faru a baya shekaru miliyan 100 da suka shige, da kusan dukkanin shaidun su sun ɓace a yanzu.
Don fayyace, masanin kimiyyar lissafi kuma marubucin bincike Adam Frank ya bayyana a cikin wani yanki na Atlantic, "Ba sau da yawa kuke buga takarda da ke ba da hasashe wanda ba ku goyan bayansa." A wasu kalmomi, ba su yi imani da kasancewar tsohuwar wayewar zamanin Iyayen Zamani da Mutanen Lizard. Maimakon haka, manufarsu ita ce su gano yadda za mu iya gano shaidar tsofaffin wayewa a duniyoyi masu nisa.
Yana iya zama mai ma'ana cewa za mu shaida shaidar irin wannan wayewa - bayan haka, dinosaur sun wanzu shekaru miliyan 100 da suka wuce, kuma mun san wannan saboda an gano burbushin su. Sun kasance, duk da haka, kusan fiye da shekaru miliyan 150.
Wannan yana da mahimmanci domin ba wai kawai shekaru nawa ne ko faɗin rugujewar wannan wayewar da za ta kasance ba. Hakanan game da tsawon lokacin da aka yi shi ne. Dan Adam ya faɗaɗa ko'ina cikin duniya cikin ɗan gajeren lokaci mai ban mamaki - kusan shekaru 100,000.
Idan wani nau'in ya yi iri ɗaya, damar mu na samunsa a cikin tarihin ƙasa zai yi ƙasa sosai. Binciken da Frank da mawallafin sa Gavin Schmidt suka yi na nufin gano hanyoyin gano wayewar zamani.
Allura a cikin hay
Wataƙila ba ma buƙatar sanar da ku cewa mutane sun riga sun yi tasiri na dogon lokaci akan muhalli. Filastik za ta bazu zuwa cikin ƙananan ƙwayoyin cuta waɗanda za a haɗa su cikin laka don millennia yayin da yake raguwa.
Duk da haka, ko da sun daɗe na dogon lokaci, yana iya zama da wahala a gano wannan ɓangarorin filastik. Maimakon haka, neman lokutan ƙarar carbon a cikin yanayi zai iya zama mafi amfani.
Duniya a halin yanzu tana cikin lokacin Anthropocene, wanda rinjayen ɗan adam ya bayyana. Hakanan ana bambanta shi ta hanyar haɓakar carbon da ba a saba gani ba.
Wannan ba yana nufin akwai ƙarin carbon a cikin iska fiye da kowane lokaci ba. The Paleocene-Eocene Thermal Maximum (PETM), lokacin tsananin zafi a duniya, ya faru shekaru miliyan 56 da suka wuce.
A sandunan, zafin jiki ya kai 70 Fahrenheit (digiri 21 Celsius). A lokaci guda kuma, akwai shaidar ƙara yawan matakan carbon carbons a cikin yanayi - ainihin dalilan da ba a san su ba. Wannan haɓakar carbon ya faru a cikin shekaru dubu ɗari da yawa. Shin wannan shine shaidar da ci gaban wayewa ya bari a zamanin kafin tarihi? Shin da gaske ne duniya ta shaida wani abu makamancin haka fiye da tunaninmu?
Saƙon binciken mai ban sha'awa shi ne, a haƙiƙa, akwai wata dabara don neman tsoffin wayewa. Abin da kawai za ku yi shi ne tsefe ta cikin ruwan ƙanƙara don ɗan gajeren lokaci, fashewar carbon dioxide da sauri - amma "alurar" da za su nema a cikin wannan hay zai zama da sauƙi a rasa idan masu binciken ba su san abin da suke nema ba. .
