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Origin of Life

Panspermia Discounted: Life Had to Start Here
February 8, 2009
Some prominent biologists have pointed to a back door on the stage of life’s origin.  They have argued that even if the probability for the first cell was unlikely on Earth, life could have been brought here from space.  Francis Crick promoted this view; so did Fred Hoyle.  Most recently, even the ardent atheist Darwin […]
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Amazing Facts

Modeling Solar Cells on Butterflies
February 7, 2009
Sunlight is free – if we could just learn how to use it better.  For decades, engineers have been trying to improve the efficiency of solar cells.  Why not look at nature?  Science Daily reported on work going on in China and Japan: “The discovery that butterfly wings have scales that act as tiny solar […]
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Fossils

A Tale of Two Sites: Moby Dog and The Claw
February 6, 2009
Discoveries portrayed as major evolutionary missing links were announced this week.  One is a putative transitional form from land animal to whale, and one is a Cambrian trilobite-like creature said to be evolving the first claw. Moby dog:  The current evolutionary scenario for the origin of whales is that they evolved from dog-like hoofed animals […]
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Amazing Facts

Evolution as Efficiency Expert
February 6, 2009
Who would have thought that a lowly bacterium is a “master of industrial efficiency”?  That’s what a researcher at the Weizmann Institute of Science called it.  E. coli, the best-studied microbe, “can be thought of as a factory with just one product: itself,” a press release said.  “It exists to make copies of itself, and […]
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Early Man

What Mean These Observations?
February 5, 2009
Science news outlets report many interesting findings every week.  It’s not always clear, though, whether the conclusions drawn from them are warranted by the data.  Here are some recent cases: Jaws of steel:  A skull labeled Australopithecus robustus was studied for the force its jaws could generate.  Interpretation: “Early humans had jaws of steel.”  With […]
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Bible and Theology

Darwin Still Doesn’t Do Well in Polls
February 4, 2009
British Darwin defender Richard Dawkins is gnashing his teeth over the latest poll in Britain that shows “More than half of the public believe that the theory of evolution cannot explain the full complexity of life on Earth, and a ‘designer’ must have lent a hand,” according to the UK Guardian and UK Telegraph.  Dawkins […]
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Amazing Facts

Corn Is Fuel in More Ways than One
February 3, 2009
There’s been controversy lately about the diversion of corn crops from food for humans to ethanol for engines.  Why not both?  A new pilot program announced by Fraunhofer-Gesellschaft saves the corn cobs for eating but makes ethanol out of the straw.  If so, this would make the whole plant an energy factory for the human […]
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Birds

The Early Bird Gets the Just-So Story
February 3, 2009
If a catastrophic world event wiped out the dinosaurs, why did birds survive?  They’re smaller and more delicate, it seems.  National Geographic published a new hypothesis: they out-thought the doomed dinosaurs.  “Birds survived the global catastrophe that wiped out their dinosaur relatives due to superior brainpower, a new study suggests.”     A couple of […]
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Solar System

Titan Methane Age Still a Problem
February 2, 2009
“Our new map provides more coverage of Titan’s poles, but even if all of the features we see there were filled with liquid methane, there’s still not enough to sustain the atmosphere for more than 10 million years.”  So said Elizabeth Turtle, lead author of a paper in Geophysical Research Letters,1 in an article on […]
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Dumb Ideas

Darwin Praise Service Begins
February 1, 2009
The celebrations in honor of Charles Robert Darwin for his 200th birthday (Feb. 12) and the 150th anniversary of the publication of his influential book On the Origin of Species by Natural Selection (Nov. 29th) are well underway.  It is hard to think of any other scientist who gets the kind of gushy adulation heaped […]
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Cell Biology

Obama and Stem Cells: Hope Chest or Pandora’s Box?
January 31, 2009
Any day now, as he promised, President Obama will likely lift funding restrictions on embryonic stem cell research imposed by former President Bush.  Bush had sought the council of leading scientists and ethicists before making his decision.  Obama, by contrast, will be yielding to the opinions of the scientific societies who have clamored for years […]
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Intelligent Design

SETI Has a Long History
January 30, 2009
Astrobiology Magazine provided a historical look at attempts to communicate with aliens.  Like the weather, people talked about life in outer space, but nobody did anything about it – at least till technology made such talk a little less crazy.  Michael Schirber’s survey includes some interesting characters – Kepler, Gauss, Tesla and Einstein – along […]
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Dumb Ideas

Plant Lignin Found in Red Algae
January 29, 2009
Time to rewrite the textbooks again.  The story of plant evolution is wrong.  Lignin, a chemical that gives wood its stiffness, was thought to be unique to land plants.  Now it has been found in red algae, reported Science Daily, with the title, “Billion-year Revision Of Plant Evolution Timeline May Stem From Discovery Of Lignin […]
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Birds

Is Natural Selection Losing its Appeal?
January 28, 2009
Some recent science reports sound like they are ready to cast Darwin’s key phrase natural selection overboard, or at least demote it from its leading role in evolution.  These articles each hint that long-held beliefs are being challenged. Make room:  Science Daily asked, “Natural Selection Not The Only Process That Drives Evolution?”  Scientists at Uppsala […]
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Genetics

New Genetics Revolution Underway
January 27, 2009
The genetics of the 1950s was that DNA is the seat of all inheritance, and that genetic information traveled one way: from DNA to protein.  That “central dogma” has been changing after decades of further researchers.  Theories of epigenetics (inheritance not limited to DNA) have been gaining attention with increasing frequency.     Science Daily […]
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