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Dinosaurs

Velociraptors as Tree Climbers?
September 11, 2009
Remember those sickle-shaped claws on the feet of Velociraptor that terrified visitors in the Jurassic Park movies?  New Scientist reported a radically different theory about them.  They weren’t for eviscerating their prey; they were for climbing trees.  Phil Manning (U of Manchester) previously showed they were insufficient for tearing dinosaur skin.  Now he is suggesting […]
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Amazing Facts

Your Eye Sees Trouble Before You Do
September 10, 2009
In slapstick comedy, the fall guy gets the pie in the face when the clown in front of him ducks.  It’s funny because most of us instinctively duck when we see something coming.  But two recent experimental studies are revealing new automated capabilities built into the eye and brain that are quicker and more automatic […]
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Early Man

Human Evolution Story Confounded – Again
September 9, 2009
Human fossils in Georgia (Asia) have confounded the timeline of human evolution again.  The UK newspaper Independent reported that the 3 skulls of Homo erectus are rewriting the history of man.  If these are as old as claimed (1.8 million years), it would toss overboard the long held belief that modern humans first emerged in […]
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Education

Do You Need a Darwinian Doctor?
September 8, 2009
Visualize a cartoon of Charles Darwin as Hippocrates.  It accompanies a book review in Science by Peter T. Ellison (Harvard).1  Ellison realizes that the mass of material doctors need to master is formidable, but thinks that “Evolutionary biology, however, is no longer an expendable topic in medical education.”     The book is Principles of […]
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Intelligent Design

Earth Size Gives Life Edge
September 7, 2009
The earth seems to be holding onto its status as a privileged planet.  New Scientist reported that a rocky planet’s size is linked to its ability to sustain a magnetic field and plate tectonics.  This means that some of the “super-earths” found around other stars (5-10 times the size of earth) may not be habitable.  […]
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Mind and Brain

What Darwin Does to Psychology – And Humanity
September 6, 2009
“Traits that we may find unsavory are nevertheless also products of our evolutionary history.”  This quote stands out boldly in a call-out from an article by psychologist Jerome H. Barkow (Dalhousie University) in a review of evo-psych (evolutionary psychology) in PNAS.1 Barkow acknowledged controversy about the premise that the evolutionary history of our psyches produces […]
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Dumb Ideas

New Recipe for Life: Zinc & Zap
September 5, 2009
Two scientists are overturning the Miller icon of the origin of life – you know, the illustration in almost every textbook showing sparks zapping gases and amino acids emerging from the goo.  That doesn’t wash any more, claim Armen Mulkidjanian (University of Osnabrueck) and Michael Galperin (U.S. National Institutes of Health).  Instead, Astrobiology Magazine reported, […]
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Fossils

Permian Extinction Recovery Story Stretches Credibility
September 4, 2009
It goes without saying that Darwin’s theory fits hand in glove with the geological dating scheme, but how reliable is the latter?  The textbook age names – Permian, Triassic, Jurassic, Eocene and all the rest – have taken on their own life as assumed truths.  Every once in awhile, though, papers are published that require […]
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Amazing Facts

Molecular Machines on Parade
September 3, 2009
Scientific papers continue to exhibit the exquisite mechanisms in the cell for handling all kinds of situations, through the operation of molecular machines.  Here are a few recent examples from this week’s issue of Nature (Sept 3, 2009). Molecular sieve:  What happens when a cell gets bloated?  Too much water entering a cell can increase […]
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Dumb Ideas

Mutation: Not a Bug, a Feature
September 2, 2009
Evolutionary biologists are sometimes risque with the way they discuss mutations.  They treat them almost like magic wands, able to produce wondrous new organs and functions by accident. Health to them, death to you:  One article on Science Daily discussed a mutation that causes congenital heart disease in humans, but may have been a stepping […]
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Dumb Ideas

Milking the Martian Meteorite
September 1, 2009
One would think everything has been told about ALH 84001, the Martian meteorite that made a splash in 1996 with claims it contained fossils of living organisms.  That claim was essentially discarded in subsequent years.  Its major contribution was giving life to a new science called astrobiology and energizing NASA’s Mars program.  Now, a new […]
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Dumb Ideas

Emergence of Genetic Code Touted
August 31, 2009
Most origin-of-life researchers have acknowledged the extreme improbability of the genetic code arising by chance.  Their approaches to get around this problem have varied considerably since the Miller experiment succeeded in generating a few amino acids.  Despite the celebrations that 1953 experiment generated (05/02/2003), it did not even begin to approach the problem of solving […]
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Amazing Facts

Your Throat Has Tasteful Antennae
August 30, 2009
Our airways are lined with cells that have beating oars called motile cilia.  Like galley slaves on a Roman ship, they beat in coordinated waves, setting up currents that propel dust and foreign matter out toward the mouth.  Scientists just found out another amazing capability of these motile cilia: they can “taste” toxic chemicals and […]
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Dumb Ideas

How the Girl Evolved Fear of Spiders
August 29, 2009
Today’s Evolutionary Just-So Story is brought to you by New Scientist: “Girls Are Primed to Fear Spiders.”  Once upon a time, while cavemen were out hunting and gathering, the women back home had to learn to avoid dangerous animals.  David Rakison of Carnegie Mellon University put this all into evolutionary terms for the rest of […]
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Darwin and Evolution

Return of the Peppered Mice
August 28, 2009
Slight changes in the coat color of deer mice is the latest triumph of evolutionary theory.
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