the mayan civilization began in 1500 BC in a jungle civilization of Central America, in astronomy, mathematics, heavy, art, writing, etc have higher achievement, in the 16th century, was destroyed by the Spanish, spoken and written languages were gone. Someone according to a piece of it’s said that the mayan calendar was unearthed stele, judge the mayans who live & other; The fifth sun ji & throughout; The last day of December 21, 2012, to the end of the world, is actually very absurd.
the film “2012” to steal the mayan prophecy concept, out of a black hole, geomagnetic reversal, small objects hit earth, solar storms and plate collision, the earth disaster reason, also do not refute. No destruction, the reality is that the earth but the earth’s creatures have & other; The end of the world & throughout; On geohistory creatures had five extinctions and one small extinction, for biological is & other; The end of the world & throughout; .
, five mass extinctions, for the first time in 440 million years ago the late ordovician, about 85% of the species; , the second time in 365 million years ago in the late devonian Marine life suffered destruction; The third was at the end of the Permian period, 250 million years ago is the biggest extinction event on geohistory, 96% of the species extinction; Fourth is 195 million years ago in the late Triassic, an estimated 76% of the species extinction; The fifth is the dinosaurs 65 million years ago.
small biological extinction occurred 40 million years ago at the beginning of the Eocene, the extinction in hunan chaling and HengDong have reflected. Scientists call this period & other Paleocene to Eocene extremely hot issue & throughout; , in all kinds of speculation, the more consensus leads to extinction is extremely high temperature & other; Methane hydrates & throughout; Release a large amount of carbon dioxide and other; The greenhouse effect & throughout; Caused by.
on geohistory of extinction are natural reason, has nothing to do with the human, but human beings should from the Eocene early lessons, this biological small extinction human on earth to build the efficiency of carbon dioxide than natural causes of Eocene, if uncontrolled, the future may be we making our own & other; The end of the world & throughout; .
/TongQianMing hunan geography geology consultant, geological research institute, a professor of hunan province