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Darwin and Evolution

Evolution of Segmentation Leads to Playing God
July 28, 2010
Most animals come in segments – body plans that are divided into more-or-less similar parts.  Arthropods, worms and vertebrates are examples (including humans, with their vertebral segments and rough division into head, thorax and abdomen).  Where did the idea of segmentation come from?  Some French evolutionists think it just appeared by chance and changed the […]
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Darwin and Evolution

Recapitulation Theory Gets Recap
July 26, 2010
The long-discounted “recapitulation theory” of Ernst Haeckel, the idea that the development of an embryo replays its evolutionary history, pops up every once in awhile in evolutionary explanations.  Evolutionary biologists (most notably the late Stephen Jay Gould) have long since disparaged the idea that evolutionary history would be preserved in embryos.  In addition, photos of […]
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Fossils

Scratching Heads With Imaginary Stars
July 21, 2010
It was lurking out there, astronomers said.  Our sun’s evil companion, invisible, dark, like a stealthy general of an enemy force, wandered silently in hiding, waiting for the next opportunity to order its agents of death into combat.  Its name was Nemesis.  Every 27 million years, using its gravity, it sent comets from the Oort […]
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Early Man

Tricks to Preserve Deep Time
July 15, 2010
It’s not always easy to prove that things are very, very old.  After all, no one has ever experienced deep time (millions and billions of years).  The key is to maintain a public “feeling” in the oldness of things.  Once that feeling is in place, some pretty major tweaks can be made by the experts […]
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Birds

Revising Dinosaurs
July 14, 2010
Reconstructing a lost world from fossils is an inexact science.  The realization that two species of dinosaur were different growth stages of the same species is just one example of the difficulty of drawing conclusions about past ecological conditions.  It raises additional questions about the mental visions we have of the world of dinosaurs.   […]
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Darwin and Evolution

Do New Fossils Soften the Cambrian Explosion?
July 5, 2010
Look at the picture of fossils in an article on PhysOrg.  The discoverers claim these fossils from Gabon are 2.1 billion years old, and provide evidence that multicellular organisms began evolving long before the Cambrian explosion.  “Until now, it has been assumed that organized multicellular life appeared around 0.6 billion years ago and that before […]
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Darwin and Evolution

Tibetans Evolved Altitude Tolerance in 3,000 Years
July 3, 2010
Tibetans and other peoples who live at high altitudes possess a remarkable tolerance to the thin atmosphere.  Now, scientists at UC Berkeley have identified some 30 genes related to oxygen regulation that differ in Tibetans from Han Chinese.  Since those tribes are thought to have diverged 3,000 years ago, natural selection for these changes must […]
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Early Man

Lucy Gets a Date with Big Man
June 22, 2010
Another specimen of Australopithecus afarensis has been announced from Ethiopia.  This one supposedly preceded Lucy by 400,000 years, and according to its discoverers, belonged to a group of primates that shows they “were almost as proficient as we are walking on two legs, and that the elongation of our legs came earlier in our evolution […]
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Birds

Fossils Without Evolution
June 18, 2010
New fossils continue to turn up around the world.  Many of them have an amazing characteristic in common: they look almost exactly like their living counterparts, despite being millions of years old, according to the evolutionary timescale.  It’s interesting sometimes to hear how the evolutionists explain the remarkable lack of evolution in all that time. […]
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Darwin and Evolution

Darwin’s Sweatshop: Why Ethiopia Made People Hairless
June 10, 2010
Five scientists think they have figured out why people walk upright and don’t have fur like other mammals.  They had to evolve in Ethiopia, where it is hot.  This led to the loss of body hair, and the evolution of sweat glands and other adaptations to deal with the heat.     It’s not that […]
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Darwin and Evolution

How Science Is Done: Upsetting Applecarts
May 19, 2010
Hardly a week goes by without some scientific finding upsetting an applecart – a long-held belief.  Often, those beliefs are scientific theories taught in textbooks by science professors.  Defenders of science say that this is the way science works.  It’s a self-correcting process, they argue; it’s to be expected that new data will lead to […]
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Fossils

More Pow in the Cambrian Explosion
May 11, 2010
Scientists have found more fossil evidence for sudden emergence of animal body plans in the Cambrian strata.  Two papers in Geology discuss evidence on opposite sides of the world.  One team found bryozoans in Mexico 8 million years older than the record-holders in China,1 and another scientist found diverse echinoderms in Spain dating from the […]
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Birds

Archaeopteryx Fossil Retains Original Soft-Tissue Material
May 10, 2010
We are usually told that fossils involve the complete replacement of original living material by rock, except in rare cases (such as amber), because organic material is quickly destroyed.  One of the most famous rock fossils is Archaeopteryx, the bird that has often been claimed to be a missing link from dinosaurs.  An international team […]
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Early Man

Humans and Neanderthals Are One
May 8, 2010
If Neanderthals bred with modern humans, they are one and the same species.  That must be the case according to the most widely-accepted definition of a species: those who can breed and produce fertile offspring.  The news media are abuzz with Science magazine’s cover story this week, “The Neanderthal Genome.”1  Most anthropologists are now accepting […]
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Birds

Dino-Feather Story Gets Fluffier
May 1, 2010
Xing Xu is at it again, claiming that dinosaur feathers are found everywhere – in China, at least, where the bulk of “feathered dinosaur” claims keep turning up in farmyards.  The latest claim is that “Feather structures in maturing dinosaurs changed as they grew.”  This story is accompanied by artwork showing the critters looking as […]
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