According to the genealogy of the Bible, the age of the Earth is around 6000 years old. With the scientific evidence today, scientists have estimated the world to be 4.6 billion years old. Who's right?
I would read this article by Pastor Driscoll of Seattle, specifically the section entitled "How old is the Earth?" He writes:
The general scientific consensus based upon radiometric dating is that the earth is very old, perhaps even 4.5 billion years old. Some Christians have sought to refute this finding by declaring that the universal flood in Genesis 6-9 altered the earth's geology so greatly that the earth now appears old. But non-Christian scientists have countered by arguing that they have also tested rocks and meteors that have come from the moon and landed on the earth which also date to the same age as the earth, roughly 4.5 billion years old. Many Christians have disregarded radiometric dating as flawed and inaccurate...
In the end, it must be admitted that the age of the earth is simply not stated in the Bible and it may be young or old. Futhermore, both young and old earth advocates are inferring from the Bible a position that the Bible simply does not clearly state. It must also be admitted that the age of the earth is not a great concern in the Bible; as Augustine rightly said, it is not a scientific textbook seeking to answer the ever-changing inquiries of science, but rather a theological textbook seeking to reveal God and the means by which He saves us.
It is also very important to read the 6 possible interpretations of the Genesis account. The account that Driscoll (and I agree it seems to make the most sense) is that of "Historical Creationism":
In this view, Genesis 1:1 records the making of all of creation by God out of nothing (or ex nihilo) through a merism of "heavens and earth," which means the sky above and land below, or the totality of creation. Since the word used for "beginning" in Genesis 1:1 is reshit in Hebrew, which means an indefinite period of time, it is likely that all of creation was completed over an extended period of time (anywhere from days to billions of years). Then Genesis 1:2 begins the description of God preparing the uninhabitable land for the creation of mankind. The preparation of the uncultivated land for and creation of Adam and Eve occurred in six literal twenty-four hour days. This view leaves open the possibility of both an old earth and six literal days of creation.
Summarily, the Bible's account of creation is compatible with the view that the world is 4.6+ billion years old.
[Answered by Pastor HM]
