There has been multiple predictions for the end of the world. All of them (the ones that have not happened yet) are clearly wrong. We as humans have a nature to obsess over irrelevant (maybe, maybe not) things such as the end of the world. Many people from years, even centuries have predicted what year THEY think the world will end and so far, they have been wrong. The most famous person as of right now is Nostradamus, he predicted the day the world will end is on December 21, 2012. He is part of the "Maya civilization in South America [and] was for several centuries one of the most advanced in the world. Along with their architectural achievements, the Mayans left us with calendars that, some argue, predict the end of the world on December 21, 2012" (Read more: http://www.dailymail.co.uk/news/article-2056215/Doomsday-prophet-Harold-Camping-resigns-apologises-failed-predictions-months.html#ixzz2B5nKRtnT). 



​A lot of people have been thinking that Nostradamus' prediction is true and it will happen. Although, many astronomers have debunked his prediction and they say that nothing happen and it will just be another day. Don Yeomans from NASA explains that the Mayan calendar like ours and does not end on December 21st, it simply ends THAT calendar and a new one will begin (like how ours will end December 31st, and then the new year will start with January 1st). Another myth is another planet called 'Niburu' will come towards earth and caused catastrophic natural events. Don says that if it were to be true, they would have seen the planet coming and even if it were invisible, the effects that it had on the other planets would have been seen by thousands of astronomers that watch the night sky (http://vimeo.com/38458761).