Earth's Expiration Date?

After reading my friend's article about sinkholes (here) I began thinking... Will the expiration date of the earth be on 2012?

In Ecclesiastes 1: 4, God tell us that "Generations come and generations go, but the Earth remains forever." And also in the scripture Genesis 18: 16-33, God promised Abraham that He will not put an end in the place where there are people who still believes in Him.

So maybe all we need to do is still have faith on Him. Believe! Because if we won't, we might not see the earth expire by 2012... Maybe it'll be sooner than that!