I don't know any scientists who think the earth is only 6000 years old. What makes you believe that? What's wrong with the body being formed from dust, not from monkeys, but from pre-Adamic man? The scientific evidence we have now, that we didn't have before, tells us it is impossible for elements to turn into life without some Higher Power.
Science doesn't know what life is and can't explain how life arose from the chaos of an explosion that sterilized the entire cosmos a trillion times over. "Natural selection" is no help. It can neither create life nor assist the first living thing to start functioning.
The first living cell would have had to come about by pure chance. But this is mathematically impossible--and there is no arguing with mathematics.
There are approximately 10^80 atoms in the cosmos. Assuming 10^12 interatomic interactions per second per atom, and 10^18 seconds (30 billion years) as twice the evolutionists' age of the universe, we get 10^110 (80 +12+18) as the total number of possible interatomic interactions in 30 billion years.
If each interatomic interaction produced a unique molecule, then no more than 10^110 unique molecules could have ever existed in the universe. About 1,000 protein molecules composed of amino acids are needed for the most primitive form of life. To find a proper sequence of 200 amino acids for a relatively short protein molecule has been calculated to require "about 10^130 trials. This is a hundred billion billion times the total number of molecules ever to exist in the history of the cosmos! No random process could ever result in even one such protein structure, much less the full set of roughly 1000 needed in the simplest form of life.
"It is therefore sheer irrationality...to believe that random chemical interactions could ever [form] a viable set of functional proteins out of the truly staggering number of candidate possibilities. In the face of such stunningly unfavourable odds, how could any scientist with any sense of honesty appeal to chance interactions as the explanation for the complexity we see in living systems? To do so with conscious awareness of these numbers, in my opinion, represents a serious breach of scientific integrity" (John R. Baumgardener, Theoretical Division of Los Alamos National Laboratory. See In Six Days, pp. 224-25).
Remember, the simplest physical structure upon which natural selection might operate must happen by chance--and it can't.
When anyone says that an eye, for example, couldn't happen by chance, Dawkins responds in an offended tone, "Well, of course an eye couldn't happen by chance! Natural selection is the very opposite of chance!" But Dawkins doesn't mention that natural selection is impossible without some living thing that can replicate itself.