Chris Cantell Discusses Science: Spory o veku Zeme Sandra Stoklaskova

Viete ako dlho jestvuje zivot na Zemeguli? Viete ako vznikol zivot na Zemi? Myslite si, ze zive organizmy priviedol k existencii Boh? Alebo si myslite, ze sme vyrastli z roznych mikroorganizmov, ci primatov? Nikto nemoze presne odpovedat na tieto otazky, pretoze kazdy z nas veri v iny nazor. Napriek tomu sa vedci a vyskumnici stale snazia najst odpovede na tieto a taktiez ine existencne otazky.Uskutocnil sa vyskum nevysvetlitelnych dier v horninach Zapadnej Australie, ktory bol vedeny francuzskym timom vedcov z Institutu Globalnej Fyziky v Parizi. Vyuzili techniku znamu ako nanospectroscopia, aby studovali jadra vyvrtane z tychto horninovych utvarov. Region sa nazyva Pilabra a je vseobecne znamy vdaka dieram, ktore maju tvar kuzelov, vln a klenieb. V poslednych tyzdnoch bol tento region plny vedcov, najma paleo-geologov z celeho sveta.Taktiez tito vyskumnici maju rozdielne nazory . Niektori z nich si myslia, ze diery obsahuju fosilie bakterii, zname ako stromatolity, ktore zili v morskej alebo jazernej vode v mladom veku Zeme. Ini su toho nazoru, ze tieto tvary su vysledkom reakcie skal s morskou vodou.Skumanie vedene Kevinom Lepotom datuje tieto horniny na 2.72 biliona rokov. Iny vyskum, ktory bol pod zastitou Abigail Allwoodovej, zistil, ze mikrofosilie tychto hornin su stare 3.4 biliona rokov.Teraz nam len zostava cakat do vydania novej studie vo februari, aby sme zistli pravdu.

related story: http://news.yahoo.com/s/afp/20080128/sc_afp/sciencepalaeontologyfranceaustralia_080128211358;_ylt=AhfBSgR6xaTHJm7bhyI8_rus0NUE

by Sandra Stoklaskova for PocketNews (http://pocketnews.tv)

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edited by Tatiana Kucharikova