VIEW HEADLINES ONLY
Darwin and Evolution

Darwin in the Air
January 11, 2009
Darwin Day euphoria must be in the air.  There have been several news stories with Darwin or Evolution in the title, but little to his credit in the substance of the article. Evolution inaction:  The human immune system is, by any account, Science Daily, however not only called it a case of “Evolution in Action,” […]
CONTINUE READING
Cosmology

Dream On, Astrobiology
December 22, 2008
An astrobiologist at Open University (UK) has classified habitable worlds into four types, even though only one of them is known to have life.  Astrobiology Magazine reported the list by Jan Hendrik Bredeh?ft: earth-like, Mars-like, Venus-like and water-worlds.  After considering all the facts, Bredeh?ft says our best bet to find extraterrestrial ecosystems is to hunt […]
CONTINUE READING
Education

Which Evolution Should Be Taught?
December 19, 2008
Two articles in Scientific American’s cover feature on evolution in preparation for Darwin Day (12/15/2008, 12/16/2008) quoted a favorite line by Dobzhansky, “Nothing in biology makes sense except in the light of evolution.”  Assuming a teacher or textbook writer wants to illustrate how true this proverb is, which evolutionary proposal should be presented?  Recent articles […]
CONTINUE READING
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 […]
CONTINUE READING
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 […]
CONTINUE READING
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 […]
CONTINUE READING
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: […]
CONTINUE READING
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 […]
CONTINUE READING
Origin of Life

The Life and Death of Oxygen
October 24, 2008
The oxygen in our atmosphere has the energy equivalent of 20 thousand billion billion hydrogen bombs.  To maintain the oxygen level in our atmosphere, that amount of energy would have to be spent in manufacturing molecular oxygen every 4 million years (a thousandth the assumed age of the earth).     Now that we have […]
CONTINUE READING
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 […]
CONTINUE READING
Dumb Ideas

The Prevolution of Evolution: Life Marches In
September 17, 2008
There’s a new word preceding the E word evolution.  Two Harvard scientists have made up a new word, prevolution, to describe a supposed stage before replication when natural selection was helping evolution evolve.  What does prevolution act on?  Simple, silly: prelife.     Martin Nowak and Hisashi Ohtsuki titled their paper in PNAS, “Prevolutionary dynamics […]
CONTINUE READING
Education

Are You Too Dumb to Understand Evolution?
September 10, 2008
Astrobiologist David Deamer believes that life can spontaneously emerge without design, but he thinks lay people are too uneducated to understand how this is possible, so he gives them the watered-down version of Darwin’s natural selection instead, which he knows is inadequate to explain the complexity of life.  That’s what he seemed to be telling […]
CONTINUE READING
Bible and Theology

Life in Space: Follow the Hot Water, not the Hot Air
August 8, 2008
Planetary scientists have their eyes and instruments on regions of hot water, but speculating too dogmatically about life in space could get you in hot water yourself.     Simon Klatterhorn (geologist, U of Idaho) is mesmerized by the possibility of life at Europa, Jupiter’s ice-crusted oceanic moon.  In an interview by Science Daily, he […]
CONTINUE READING
Media

Phoenix Did NOT Find Mars Life
August 4, 2008
A media snafu has NASA spokespersons rushing to deny that life has been found on Mars, reported Space.com.  For example, Live Science reporter Leonard David said that the White House has been alerted to the potential for new information about life on Mars based on findings from the Phoenix Lander.  The apparent secrecy has teased […]
CONTINUE READING
Dumb Ideas

Gems and Hot Ideas About Life’s Origin
July 28, 2008
It seems that origin-of-life speculations are constantly looking for new plot lines.  PhysOrg published a new idea that life started on diamonds.  Yes, “Diamonds may have been life”s best friend on primordial Earth,” it began, raising the interesting question whether friendship was a concept before consciousness emerged.  Since diamonds are thought to be among the […]
CONTINUE READING
Page 20 of 29« First...10...16171819202122232425...Last »
All Posts by Date