A collection of short commentaries on scientific papers published in 1991, covering topics such as Permian trees, molecular genetics, epigenetics, inheritance of paternal mtDNA, water and formation of petroleum, water in mantle rocks, impacts, Ordovician volcanism, molecular phylogenies of ratites, termites, cichlids and sabertooths, osteocalcin in dinosaur bones, fossil flowers, origin of life, Precambrian predation, stromatolites, Cambrian Explosion, quality of fossil record, rapid speciation, tree biogeography, Miocene ape, fossil dermopteran, Asian marsupial, dinosaurs, mammal-like reptile. Published in Origins v. 19, n. 2.

Microorganisms can exist in rocks several kilometers below the surface of the earth. Recently a number of reports indicate that these organisms are much more common than previously surmised and that vast regions of the underworld may be inhabited. Published in Origins v. 19, n. 2.

The pipes and dikes in Kodachrome Basin have come from the sedimentary layers below, and raise interesting questions regarding the amount of time involved in their formation. Published in Origins v. 19, n. 1.

The unnatural mixture and the rapid stratigraphic shifts of fauna seem to require catastrophic water transport into the area. The large geographic extent precludes a local event. Creationists suggest that a world-wide flood could produce results as seen in the Santana Formation and is a better explanatory model.

Cultural legends of a prehistoric global flood are found throughout the world. The frequency and widespread nature of these stories imply an actual historical event as their basis. Published in Origins v 17, n. 2.

The approach outlined in this paper suggests that the radiometric age assigned to the inorganic minerals associated with a fossil is more a reflection of the characteristics of the source of this inorganic material than an indication of the age of the fossil. Published in Origins v. 17, n. 2.

A model of an ice age caused by the Genesis flood is summarized. It proposes solutions to a number of ice-age problems. Published in Origins v. 17, n. 2.

A collection of short commentaries on scientific papers published in 1989, covering topics such as philosophy of science, mantle plumes, molecular clock, plant phylogeny, paleobiogeography, fossil reptile, Ediacaran fossils, rapid change in birds and insects, rapid oil formation, molecular evolution, population bottleneck in Drosophila, and mass mortality of sea urchins. Published in Origins v. 17, n. 1.

Geologic features of the KT boundary present interesting evidence relating to possible causes of the mass extinction. The widespread existence of the boundary clay has been interpreted as evidence for a worldwide event at the boundary. Published in Origins v. 17, n. 1.

A collection of short commentaries on scientific papers published in 1997, covering topics such as Darwin's finches, teleology, exon shuffling, flood geology, origin of life, dinosaurs, theistic evolution, radiocarbon dating, fossil invertebrates, and monotreme chromosomes. Published in Origins v. 16, n. 2.

A recent report that the earth's magnetic field must have reversed within a period of several months stimulates interest in the question of multiple magnetic reversals in the geological record and how much time is required for them to occur. Published in Origins v. 16, n. 2.

A few scientists advocate an expanding earth as an alternative to plate tectonics. Although there are some phenenomina not well explained by plate tectonics, the expanding earth theory is not a satisfactory replacement. Published in Origins v. 16, n. 2.

The layers of sedimentary rock that we see over the surface of the earth usually appear as parallel features that are often spread over wide areas. What does not appear to the casual observer is that between some of these layers major portions of the geologic column are missing. Published in Origins v. 16, n. 2.

A collection of short commentaries on scientific articles published in 1987, covering topics such as hominid fossils, paleomagnetism and speciation. Published in Origins v. 15, n. 1.

This review examines Robert Gentry’s efforts to defend his model of creation built on the study or radiohaloes. Published in Origins v. 15, n. 1.

A review of the book, The Geology of the Flood. The author advocates an age for the earth that is much longer than the biblical chronology and much shorter than the naturalistic chronology, which will make the book's position unsatisfactory to most readers. Published in Origins v. 14, n. 2.

A collection of short commentaries on scientific papers mostly published in 1986-1987, covering topics such as amino-acid dating; creation, evolution and design; Cretaceous mass extinction, Blind Watchmaker, genetic bottleneck, slot machines and mutations, God and Nature, biogeography of marsupials, salamanders and ostriches; and a fossil climbing mammal. Published in Origins v. 14, n. 1.

The geochronological time scale of thousands of millions of years is based mainly on radiometric dating. On the other hand, some other time-dependent processes change at rates which challenge generally accepted geochronology. Published in Origins v. 13, n. 2.

A collection of short commentaries on scientific papers publised in 1986, covering topics such as Australopithecus, Cretaceous extinction, carbon-14 dating, molecular clocks, kiwi egg size, Darwin's mistakes, rapid change in snails, fossil birds, limits of science, tarsiers and presuppositions, source of European sandstones, chromosomal speciation, convergence and the giant panda. Published in Origins v. 13, n. 2.

A collection of short commentaries on scientific articles published in 1983, covering topics such as the history of Darwinism, integrity in science, evolution and thermodynamics, North American geology, Quaternary dating methods, origin of life, and the half-life of Technetium-99.