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Physics

Instant Diamonds?
May 7, 2007
Talk about catastrophism: imagine a geological process creating a dyke 150 miles deep in a few minutes.  This is a new model for how diatremes formed, as described in Nature last week.1  The surprise end of the abstract by Lionel Wilson and James W. Head III states, “No precursor to the eruption is felt at […]
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Amazing Facts

Seeking Explanations for Plant Fibonacci Spirals
May 6, 2007
The spiral patterns on an artichoke are enough to make a physicist choke.  How do plants like cacti, sunflowers, strawberries and artichokes produce geometric patterns of left- and right- handed spirals?  Why do these spirals follow a mathematical rule called the Fibonacci sequence?  A new theory suggests that it is the optimal energy arrangement for […]
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Physics

Tweaking Mercury to Keep it Old
May 4, 2007
Mercury has a magnetic field.  That’s odd.  It shouldn’t.  If it were 4.6 billion years old, the little planet should be solid stiff by now.  Planetary scientists have published a new model of its interior with the required molten outer core that allows a dynamo to generate the observed magnetic field.  What’s interesting are the […]
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Bible and Theology

Heat and Light: Jerusalem City of David Excavations Arouse Notoriety
May 3, 2007
Opinions about tangible archaeological evidence hinge on beliefs about the Bible and science.
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Amazing Facts

Swifts Don’t Just Dream of Flying…
April 29, 2007
…they fly while dreaming.  Did you know that swifts, the aerial acrobats of the air, sleep on the wing?  That’s not all, they adapt their wing shape to turn on a dime.  Science Daily summarized the cover story of Nature this week (April 26) that examined “wing morphing” in swifts – their ability to change […]
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Astronomy

Cosmology: Crisis or Confidence?
April 13, 2007
What is it with cosmology these days?  On the one hand, astronomers seem more confident than ever.  They speak of this as the era of “precision cosmology,” when the only task remaining seems to be refining the decimal points; e.g., the first refinements of the cosmic microwave background (CMB) won John Mather and George Smoot […]
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Physics

Saturn Still Serving Surprises
March 28, 2007
The Cassini Spacecraft, three-fourths of the way into its 4-year prime mission, is not running out of new things to see.  Some of the latest discoveries are both awesome and strange. A Hex on the Pole:  As if the south pole of Saturn, with its earth-sized hurricane (picture) were not dramatic enough, the north pole […]
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Amazing Facts

Why Our Voices Are Unique
March 15, 2007
We can usually recognize friends and acquaintances by their voices.  If we all have the same hardware, though, how is this possible?  The answer is in the vortex.  Sounds sci-fi, but researchers at the University of Cincinnati used knowledge of jet engines to explore the possibility that vortices may help solve the mysteries of the […]
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Amazing Facts

The Amazing Pigeon Techno-Beak
March 15, 2007
How do homing pigeons find home?  Scientists at University of Frankfurt may have found the answer: magnetic minerals in their beaks.  A press release from Springer Publications describes the amazing pigeon techno-beak: In histological and physicochemical examinations in collaboration with HASYLAB, the synchrotron laboratories based in Hamburg, Germany, iron-containing subcellular particles of maghemite and magnetite […]
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Physics

The Enceladus Problem Heats Up
March 13, 2007
How can a small icy moon produce hot-water geysers?  That is the Enceladus problem: for a small moon assumed to be 4.5 billion years old to be forcefully gushing out water from its south pole was a great surprise when the Cassini spacecraft first detected the geysers in 2005 (11/28/2005).  Ever since, scientists have been […]
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Physics

Sun as a Star: How Does It Compare?
March 7, 2007
Not too many years ago, our sun was described as a common, ordinary star.  More recently, the Type G2 Dwarf Main-Sequence class, of which Ol Sol is a member, is believed to comprise only 5% of all stars.  An important paper in Astrophysical Journal is now revealing that the sun is special within its class: […]
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Physics

Theories of the Moon: Looney Tunes?
February 19, 2007
The TV science channels tell it like a matter of fact: our Moon originated from the coalescing debris of a glancing impact with Earth from a Mars-sized object, sometime long ago.  They even have computer animations to show how it all happened.  How reliable is this theory, though?  This month’s Planetary Report from The Planetary […]
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Cosmology

Tangled String: Cosmology on the Brink
February 18, 2007
The February cover of Astronomy Magazine poses an intriguing question: “What if string theory is wrong?”  Maybe you are unfamiliar with string theory.  Writer Sten Odenwald is not talking about violins or balls of string, but about the current leading theory of fundamental physics.  “Superstring theory,” Odenwald explains, “is based on three ideas that remain […]
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Origin of Life

OOL on the Rocks
February 15, 2007
Robert Shapiro demolishes the RNA World just in time for Leslie Orgel to demolish Shapiro's own myth. Ashes, ashes; they all fall down.
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Amazing Facts

Cells Perform Nanomagic
February 13, 2007
The cell is quicker than the eye of our best scientific instruments.  Biochemists and biophysicists are nearing closer to watching cellular magic tricks in real time but aren’t quite there yet.  They know it’s just a trick of the eye, but it sure is baffling how cellular machines pull off their most amazing feats.  Think, […]
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