If the theory of evolution is true, then the earth and humans evolved over millions of years. This theory supports a very old earth.
If the Bible is true, the earth and humans were created 10-15,000 years ago by God, because of when Genesis was written. The Bible supports a much younger earth.
More and more of what scientists are finding goes hand-in-hand with biblical history and clashes with evolutionary theory... such as fossils not being as old as they once thought.
Did you know that all those fish-eating-fish emblems on people's cars are because of a fossil dating controversy? I didn't!