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Amazing Facts

Cilium Likened to GPS
December 27, 2008
A story on Science Daily says that the primary cilium, a protrusion on most human cells that looks like an antenna, acts like a GPS system.  They “orient cells to move in the right direction and at the speed needed to heal wounds, much like a Global Positioning System helps ships navigate to their destinations.” […]
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Cell Biology

Applying the Scientific Method to Prehistory
December 10, 2008
What could be more scientific than the scientific method?  A scientist observes an unexplained phenomenon.  He or she gathers data, analyzes it, proposes a hypothesis to explain it, and tests it.  The results are published in a peer-reviewed journal.  Mission accomplished, right?  Here are two papers on very different phenomena – one dealing with the […]
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Cell Biology

Nature Plagiarizes Behe’s Mousetrap
December 9, 2008
The prevention of genomic instability – and cancer – can be attributed to a “complex mousetrap” mechanism, said Robert M. Brosh, Jr (Laboratory of Molecular Gerontology, NIH) in Nature.1  This not-so-subtle reference to Michael Behe’s irreducibly complex system described in Darwin’s Black Box even has a mousetrap illustration with the following caption: The BLM protein […]
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Cell Biology

Far-Out Science
November 25, 2008
The following list of bizarre stories coming from science news outlets is jarring on two fronts: it shows how little scientists understand, and calls into question what counts as science these days.  Some stories illustrate one or the other; some both. Roar of the aurora aura:  Both Saturn and Mars turned up auroras that are […]
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Genetics

Unique “Orphan Genes” Are Widespread; Have No Evolutionary Explanation
November 19, 2008
We often hear about the similarities between genomes, but what about the differences?  There’s a growing realization that groups of animals have genetic orphans – genes that are unique to that line (see 01/02/2003).  These genes have no evolutionary homology or kinship to genes from other lineages.  How did they arise?  And what do they […]
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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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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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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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Cell Biology

Biological Complexity Continues to Astound
November 3, 2008
There’s more going on in your thinking apparatus than you think.  New scientific discoveries continue to unfold new layers of complexity and control.  Here are a few examples: Meta-code:  Your body has codes directing codes.  Geneticists were initially dismayed to find only 20,000 to 30,000 genes in the human genome.  “We were expecting that something […]
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Amazing Facts

Paley’s Watch Found in Bacteria
October 31, 2008
A clock with cogs, gears and ratchets that keeps accurate time – what more could William Paley wish for?  The 18th century natural theologian used the illustration of stumbling upon a watch in a heath as an example of reasoning from design to a Designer – as from watch to watchmaker.  Skeptics like David Hume […]
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Amazing Facts

How Cells Thread a Needle
October 17, 2008
Your challenge today is to invent a machine that can push a wet noodle through a straw.  It can’t pull it.  First it has to grab the end, then push it through without breaking it.  Oh, and there’s a catch; the straw has a plug at the far end and a constriction inside.  Give up?  […]
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Cell Biology

Selling Stem Cells to Voters
October 15, 2008
If you thought embryonic stem cell research became moot after researchers found they could induce skin cells to become pluripotent, these news stories show the push is still on to open up more funds for embryonic stem cells.  A ballot measure in Michigan is a bellwether for how scientists still feel about these tantalizing objects […]
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Amazing Facts

Plants Have Thermostats
October 13, 2008
Plants, being stuck in the ground, have few options when it gets hot.  They may not be able to move into the shade like animals, but they know how to cope.  They have a built-in thermostat that acts like a fire prevention department.  Science Daily tells the story.     Researchers at Michigan State identified […]
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Amazing Facts

Deep Life Is Right at Home in Total Darkness
October 10, 2008
It seems every year scientists find organisms thriving in environments thought too inhospitable for life.  A new word was coined for these organisms: extremophiles – lovers of the extreme.  Two recent discoveries push the envelope of extreme environments almost to the deep limit. Pressurized fish:  The bottoms of the deep ocean trenches of the Pacific […]
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Dumb Ideas

It’s Fun Seeing Evolution Falsified
October 8, 2008
“Mysterious Snippets Of DNA Withstand Eons Of Evolution” is the strange title of an article on Science Daily.  Gill Bejerano and Cory McLean from Stanford are wondering why large non-coding sections of DNA are very similar, or “ultraconserved,” from mice to man (see 08/18/2007).  Evolutionary theory would expect that non-functional genetic material would mutate more […]
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