Wakambozvibvunza here kana chimwe chisikwa chingashanduka kuti chive nehungwaru hwepamwero yevanhu nguva refu mushure mekunge vanhu vasiya pasi rino? Hatina chokwadi nezvako, asi isu tinogara tichifungidzira raccoons mune iro basa.
Zvichida mamiriyoni makumi manomwe emakore kubva ikozvino, mhuri yezviputi zvefuzzballs ichaungana pamberi peGomo reRushmore, vachibatidza moto nezvigunwe zvavo zvinopikisa uye vachishamisika kuti zvipenyu zvipi zvakaveza gomo iri. Asi, imbomira kweminiti, Mt. Rushmore ingagara kwenguva yakareba kudaro? Uye zvakadini kana tikazova maraccoon?
Mune mamwe mazwi, kana mhando yepamusoro yetekinoroji yakadzora pasi panguva yemadinosaur, taizoziva nezvazvo here? Uye kana zvisina kudaro, tinoziva sei kuti hazvina kuitika?
Nyika nguva isati yasvika
Iyo inozivikanwa seSilurian Hypothesis (uye, kuti urege kufunga kuti masayendisiti haasi matsi, inotumidzwa zita rekuuraya kweChiremba Who zvisikwa). Inototaura kuti vanhu havasi ivo vekutanga zvisikwa zvipenyu zvakashanduka-shanduka panyika yedu uye kuti kudai kwaiva nevakatangira makore mamiriyoni 100 apfuura, hunenge humbowo hwese hwazvo hungadai hwakarasika pari zvino.
Kujekesa, nyanzvi yefizikisi uye munyori-munyori Adam Frank akadaro muchidimbu cheAtlantic, "Hazviwanzo kubudisa bepa rinopa fungidziro yausingatsigire." Nemamwe mashoko, havatendi muna kuvapo kwebudiriro yekare yeNguva Lords uye Lizard People. Pane kudaro, chinangwa chavo ndechekuona kuti tingawana sei humbowo hwemagariro ekare pamapuraneti ari kure.
Zvinogona kuita sezvine musoro kuti tinoona humbowo hwebudiriro yakadai - shure kwezvose, madhinaina aivepo makore zana apfuura, uye tinoziva izvi nekuti zvisaririra zvavo zvakawanikwa. Vaive, zvisinei, vakatenderedza kweanopfuura mamirioni e100 makore.
Izvi zvakakosha nekuti hazvisi zvekungogara kana kupamhama matongo ebudiriro yekufungidzira. Zviri zvakare kuti yave nenguva yakareba sei iripo. Hunhu hwakawedzera pasi rose munguva pfupi inoshamisa - ingangoita makore 100,000.
Kana imwe mhuka yakaita zvakafanana, mikana yedu yekuiwana muzvinyorwa zve geological yaizova shoma zvikuru. Tsvagiridzo yakaitwa naFrank nemunyori wezvemamiriro ekunze munyori Gavin Schmidt ine chinangwa chekunongedza nzira dzekuona dzakadzika-nguva budiriro.
Tsono muhata
Isu pamwe hatifanire kukuzivisa iwe kuti vanhu vari kutove nekukanganisa kwenguva refu kune zvakatipoteredza. Plastiki ichaora kuita twudiki twuchaiswa mumatope kwemireniyamu sezvainoshatisa.
Nekudaro, kunyangwe vakanonoka kwenguva yakareba, zvingave zvakaoma kuwana iyo microscopic stratum yezvimedu zvepurasitiki. Pane kudaro, kutsvaga nguva dzekuwedzerwa kabhoni mumhepo kunogona kuva nezvibereko zvakanyanya.
Nyika parizvino iri muAnthropocene nguva, iyo inotsanangurwa nehutongi hwevanhu. Iyo zvakare inosiyaniswa nekuwedzera kusingajairiki kwemakabhoni emhepo.
Izvi hazvireve kuti kune kabhoni yakawanda mumhepo kupfuura nakare kose. Iyo Paleocene-Eocene Thermal Maximum (PETM), nguva yekupisa kwakanyanya pamusoro penyika, yakaitika makore 56 miriyoni apfuura.
Pamatanda, tembiricha yakasvika 70 degrees Fahrenheit (21 degrees Celsius). Panguva imwecheteyo, kune humbowo hwekuwedzera kwemazinga emafossil carbons mumhepo - zvikonzero chaizvo izvo zvisingazivikanwe. Iyi carbon buildup yakaitika mukati menguva yemazana ezviuru zvemakore. Uhwu ndihwo humbowo hwakasiiwa nebudiriro yakasimukira munguva yakapfuura here? Nyika yakanyatsoona chimwe chinhu chakadai kupfuura zvatingafungidzira here?
Mharidzo yekudzidza inonakidza ndeyekuti pane, chokwadi, nzira yekutsvaga yemagariro ekare. Zvese zvaunofanirwa kuita kupeta neaizi cores kwenguva pfupi, nekukurumidza kuputika kwecarbon dioxide - asi "tsono" yavanenge vachitsvaga muhuswa uswa hwaizove nyore kupotsa kana vaongorori vaisaziva zvavaitsvaga. .
