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Cosmology

Cosmologists Taste the Forbidden Fruit
December 5, 2008
Everyone agrees: our universe appears fine-tuned for human existence.  You have two choices: it was designed by God, or there is a multiverse (other universes we cannot detect).  Amanda Gefter is unhappy with that choice.  In New Scientist, she asked, why can’t we have more options?     Calling the God-vs-multiverse choice a false dichotomy, […]
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Origin of Life

Another Attempt to Explain Life’s Handedness
December 3, 2008
Life uses only single-handed (homochiral) molecules for proteins and DNA.  How that came about when mixtures of life’s building blocks contain equal amounts of both hands is a puzzle that confounds origin-of-life research.  Science Daily reported on new studies at the Argonne National Laboratory that show that molecules in space on a magnetic substrate exposed […]
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Amazing Facts

Go to the Ant, Thou Farmer
November 30, 2008
We humans boast too much.  Agribusiness?  Ants have it down to a science.  “One of the most important developments in human civilisation was the practice of sustainable agriculture,” stated Science Daily.  “But we were not the first – ants have been doing it for over 50 million years.  Just as farming helped humans become a […]
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Biomimetics

Knowledge of Light Is Power
November 28, 2008
Now that engineers are becoming adept at manipulating materials at the scale of billionths of a meter, they are taking first steps toward using a power source familiar to plants: light.  Science Daily described the first humble attempts to get light photons to drive nano-sized machines.     The article did not mention whether photosynthesis […]
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Intelligent Design

Raise Money by Accomplishing Nothing
November 24, 2008
Frank Drake is being honored on Space.com by the SETI Institute as the “Father of SETI,”  His reputation is providing an opportunity for a fund raiser.  For a lot of money, you can spend time with a celebrity whose accomplishments are questionable. It’s not often you get the opportunity to hang out with a legend!  […]
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Intelligent Design

Nature Cannot Wait for Darwin Day
November 23, 2008
Darwin Day (Feb. 12, 2009) is months away, but Nature devoted a special issue to it this week. The cover story, Darwin 200, includes 15 articles and features, some of which are available to the public. Features include a list of celebrations and exhibitions around the world, including a re-enactment of Darwin’s voyage on a […]
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Amazing Facts

Proteins Can Tie Knots
November 18, 2008
Your job today is to invent a chain that can tie itself in a knot.  The chain can contain little magnets and electrical parts, but when you let go of the ends, a knot will spontaneously form.  This means that one end must form a loop and the other end must thread the loop.  Give […]
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Cosmology

Desperately Fleeing God in Cosmology
November 17, 2008
Does the fine-tuning of the universe require belief in God?  Or will multiverse theory allow for a self-perpetuating, eternal, godless cosmos?  Tim Folger explored this topic in an interview with Andrei Linde, a cosmologist currently at Stanford, in Discovery Magazine.  The opening line sums up the controversy: “Our universe is perfectly tailored for life.  That […]
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Amazing Facts

Cell Chaperone Is an Optimized Two-Stroke Machine
November 15, 2008
Proteins need a protected space to fold, and the cell provides it: the GroEL-GroES chaperone (see 05/05/2003, 06/07/2006, and 02/13/2007).  More details keep coming in about this “protein dressing room” as scientists continue to probe its secrets.  Two new papers in PNAS by a team at University of Maryland and College Park reveal that this […]
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Dumb Ideas

Poison Planet Was Life’s Training Ground
November 14, 2008
Navy Seals go through “Hell Week” in their training to become warriors.  The radical hardships they endure help prepare them for missions that will call on their deepest resources of courage and determination.  These men of the elite special forces also become experts in dealing with explosives.  Can molecules do the same, with a little […]
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Amazing Facts

Scientists Marvel at Enzyme Efficiency
November 11, 2008
Many chemical reactions occur from simple collisions.  One atom may have spare electrons, another may need them.  Attracted by each other’s valences, the atoms collide and bonds form.  Not so with biological enzymes: these molecular machines owe their efficiency to their three-dimensional shapes.  Made up of hundreds of amino acids, enzymes have “active sites” where […]
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Dumb Ideas

Evolution in Person
November 10, 2008
For a blind watchmaker, Evolution is quite the seer.  Science articles often personify Evolution into a wizard and worker of miracles.  This is odd, considering that evolution is supposed to be an aimless, purposeless process of chance and necessity with no goals in mind. Evolution, the Learner:  Evolution learns from past environments, we are told […]
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Human Body

Body’s Junk Is Useful Stuff
November 7, 2008
What’s the difference between junk and stuff?  The jokester replies that stuff is the junk you throw away, and junk is the stuff you keep.  When it comes to stuff in your body that scientists have called junk, you had better keep all of it, because your life may depend on it. Junk DNA:  The […]
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Dumb Ideas

Serving Up Life on the Rocks with a Twist
November 6, 2008
We’ve heard theories life arose in a primeval soup, around hot deep-sea vents, around volcanoes and other hot spots; why would anyone consider the origin of life in ice?  A scientist in Spain has suggested life may have started in ice.  The title to the Science Daily write-up finds this to be the ultimate divination: […]
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Dumb Ideas

FrankenTitan Comes to Life
October 30, 2008
There’s electricity at Titan, the large moon of Saturn.  That can only mean one thing: life!  “Electricity Found on Saturn Moon–Could It Spark Life?” asked a headline on National Geographic News by Rebecca Carroll.  Visions of spark discharge tubes in a mad scientist’s lab arise in the imagination.  “Recently identified electrical activity on Saturn’s largest […]
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