A.W. (Bill) Mehlert has a Diploma in Theology and lives in Brisbane, Australia. He is a keen student of Flood geology and the fossil record, including the supposed fossil evidence for human evolution, and has written a number of important articles on these topics in the Creation Research Society Quarterly and Creation Ex Nihilo Technical Journal.
I don't think he is adding any science, he's just recapping and summarizing from the scientific papers referenced. In that respect, he's as qualified as most other journalists that write about scientific findings.