The first one is Nostradamus, a famous prophet born in 1503, known as the profit of death because most of his predictions were of death and destruction, he often had to write in unreadable poems because the church considers his predictions devilish and wanted to exile or kill him. We only know of 12 zodiac signs (birth signs) but Nostradamus predicted that there would be a 13th zodiac sign, which will align with the sun and cause the world to end. A lot of his predictions have been true but he also but some of them not, he did predict the rise of Hitler and murder of JFK, so will the world end in 2012
The second one is the Mayans. The Mayans were a civilization that lived in Mexico many hundreds of years ago. They had their own calendar which was so accurate that it predicted actual eclipses even till today, according to the Mayans the world has been created five times and destroyed four times already, the cycle we are in started on 11 august 314 BC and will end on 12th December 2012
The next person to predict was Edgar Cayce - he was one of the best psychics, who gave readings while in a trance. He even predicted the exact date of his own death and he was right. According to Edgar Cayce we will have major floods and the world will lose its costal cities (meaning cities near the beaches like Durban, port Elizabeth) to floods and the continents will re arrange
The last prediction came form the space institute NASA, who study