Harold Camping of the U.S.-based Christian group, Family Radio, predicted that Jesus Christ will return to earth on May 21, 2011, to take with him the good ones to heaven and leave the sinners to face the end of the world.

Sparking fury across the world, the Family Radio president said, Earthquakes would sweep across the earth, first starting in New Zealand.

The day, May 21, which Camping predicted to be doomsday through a series of mathematical calculations 7,000 years after Noah’s floods, has provoked many.

As believers across the world wait to witness May 21st doomsday prediction turn real, there are a number of reasons why Saturday, May 21, is not the end of the world, according to scientists as well as believers of religion.

Whatever so-called genius has once again put fear into many people, may have lost his or her mind, Clarence M. Allen, a naval veteran from Los Angeles, said, while reacting over the hullabaloo over May 21st doomsday.

Do not believe the hype! No man knows the hour when all will be said and done, he urges.

Another staunch follower of the Holy Bible, Donna L. Serino, who is a businesswoman in Philadelphia, opposes the hoax of Saturday's end of the world, while she refers to the Act 1:7 and Matthew 24:36 in Bible.

Jesus said, it is not for you to know times or seasons that the Father has fixed by his own authority, but concerning that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father only, she said.

Geologically, scientists do not have any convincing justification for any such natural calamities striking the earth that may lead to extinction of life.

According to NASA, many doomsday predictions are based on the Mayan predictions that a planet, called Nibiru, is headed toward earth, it said in a statement pointing towards earlier doomsday forecasts including the one expected on December 21, 2012.

“This disaster was primarily likely for May 2003, though when zero happened the doomsday date was changed brazen to Dec 2012 it said.

As per NASA scientiest, the earth is quite safe for more than 4 billion years, and credible scientists worldwide know of no threat associated with 2012 or any other assumed doomsday, as there are no threatening asteroids as large as the one 65 million years ago that led to the extinction of the dinosaurs.