A kafukufuku apeza kuti mitengo yamaginito yapadziko lapansi idaphulika zaka 40,000 zapitazo, pamwambo womwe udatsatiridwa ndikusintha kwachilengedwe padziko lonse lapansi ndikutha kwazinthu zina zazikulu. Zomwe nawonso mwina zathandizira kuti kutha kwa ma Neanderthals kuthere.
Ofufuzawo omwe adachita kafukufukuyu adagwiritsa ntchito radiocarbon yosungidwa m'miphete yakale yamitengo kuti ichepetse mpaka nthawi yomwe maginito a Earth adasinthidwa ndipo mphepo ya dzuwa idalemba kusintha. Nthawi Yapadziko Lapansi zaka 42,000 zapitazo inali yovuta, ndi mphepo yamkuntho yofalikira, ma auroras ndi radiation ya cosmic yomwe imalowa mlengalenga.
Atsogozedwa ndi ofufuza ku UNSW Sydney ndi South Australia Museum, kafukufukuyu amatenga nthawi yowopsa ya 'Adams Transitional Geomagnetic Event' kapena, 'Adams Event'.
Malinga ndi Mawu a UNSW pa zomwe apezazi, dzinalo ndi ulemu kwa wolemba zopeka wasayansi Douglas Adams, yemwe adalemba kuti '42' ndiye "yankho lomaliza ku moyo, chilengedwe, ndi chilichonse" m'mabuku ake azopeka asayansi The Hitchhiker's Guide to the Galaxy.
Mitengo imasunga zolemba zam'mlengalenga mu 'mphete zawo zakukula' zikamakula. Ofufuzawo anafufuza mphete za mitengo ina yakale. Pankhaniyi, mitengo ya kauri ku New Zealand inaphunziridwa, yomwe yasungidwa m'dothi kwazaka zopitilira 40,000 ndipo idalipo nthawi ya Adam.
Carbon-14 isotope, kapena radiocarbon, sichipezeka kawirikawiri m'chilengedwe chochuluka. Atsogozedwa ndi kukwera kwa ma radiocarbon zaka 40,000 zapitazo, asayansi adatha kudziwa ndi kuyeza kukwera kwa radiocarbon yamlengalenga kuyambira pomwe maginito agwa.
Pomwe zimadziwika kuti mitengo yamaginito idazungulira kwakanthawi zaka 41 kapena 42,000 zapitazo pamwambo wotchedwa 'Laschamps Excursion', asayansi samadziwa momwe zakhudzira moyo wapadziko lapansi, ngati zingatero, mawuwo adapitilizabe.
Atazindikira nthawi ya chochitika cha Adams, gululi lidayerekezera zosintha zomwe zikuchitika munyengo yapadziko lonse nthawi yomweyo. Adapeza kuti megafauna kudera lonse la Australia ndi Tasmania adadutsa munthawi yomweyo zaka 42,000 zapitazo. Komanso, ofufuzawo amakhulupirira kuti mwambowu ungafotokozere za kutha kwa ma Neanderthals ndikuwonekera mwaluso kwa mapanga padziko lonse lapansi.
Chinsinsi chake ndikuti kumpoto kwa dziko lapansi (geomagnetic) kumayenda mosalekeza pa 50-60 km pachaka, koma palibe amene akudziwa chifukwa chake. Malo ake asintha pang'ono kuyambira pomwe amadziwika, ndipo pakadali pano ali pachilumba cha Ellesmere, kudutsa Nares Strait kuchokera ku Greenland. Kuphatikiza apo, magwero amagetsi a Earth akadali chinsinsi chachikulu.
