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Genetics

Tuatara Genes Are Running in Place
March 24, 2008
One would expect a living fossil to show extreme stasis at the genetic level.  Not so for the tuatara, a New Zealand reptile, reported EurekAlert: researchers found that “although tuatara have remained largely physically unchanged over very long periods of evolution, they are evolving – at a DNA level – faster than any other animal […]
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Biomimetics

Electronic Nose Can’t Outsniff Yours
March 19, 2008
Electronic nose makers are smelling your dust, said Science Daily.  “Despite 25 years of research, development of an ‘electronic nose’ even approaching the capabilities of the human sniffer remains a dream,” the article said.     Biological noses are great at discriminating between volatile compounds.  We can immediately sense things that are fruity, grassy, and […]
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Amazing Facts

The Gecko in the Flight Simulator
March 17, 2008
It’s a lizard!  It’s a plane!  It’s Supergecko!  Researchers at UC Berkeley (where else) put a gecko into a wind tunnel to watch it fly.  News about gecko’s magic feet that allow it to run vertically up glass is almost old hat now (08/27/2002, 01/04/2005).  Even a gecko can lose its footing, though, and thereon […]
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Biomimetics

Animal Feats Inspire Imitation
March 14, 2008
Imagine carrying 850 times your own weight.  Step aside, Hercules, and meet the Hercules beetle: the strongest creature in the world.  Science Daily said that researchers in Belgium are not just impressed with its show of strength.  They are finding inspiration for “intelligent materials.”     The Hercules beetle has a shell that is able […]
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Genetics

How to Translate Darwinese
March 6, 2008
A unique culture has sprung up around evolutionary biology.  Since evolutionary theory encompasses far more than just change in living species (touching on, for instance, ultimate origins, the nature of humanity and the destiny of the universe), its supporters sometimes get a little carried away in their language.  The tendency in science reporting to embellish […]
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Birds

Darwin for the Birds
March 4, 2008
Here’s a flock of bird stories that have Charles Darwin on stage or in the wings, so to speak. Was Darwin wrong?  Yes!  Contra National Geographic (10/24/2004), the science news outlets are all saying today that Darwin was wrong – but only about the origin of chickens (see EurekAlert #1, EurekAlert #2 and Science Daily).  […]
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Amazing Facts

Cool Bat Tricks
March 1, 2008
Bats put on a dazzling air show.  Science Daily revealed that the acrobatic mammals have magnetic instruments.  Somehow, they are able to use the magnetite in their cells as navigational aids.  Scientists from Leeds University and Princeton conducted experiments on large brown bats.  They were able to steer the bats off course by issuing magnetic […]
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Amazing Facts

Prevent Drought: Hire a Beaver
February 25, 2008
“Beavers can help ease drought,” say scientists from University of Alberta.  EurekAlert published a press release about a 54-year study that showed beaver kept open water wetlands available.  They seem to even mitigate the effects of global warming.  “Climate models predict the incidence of drought in parts of North America will increase in frequency and […]
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Mammals

Oldest Bat Fossil: Was It Evolving?
February 16, 2008
A bat fossil surpassing the previous record holder for the oldest by 2 million years made the cover of Nature this week.1  The news media immediately began saying that it provided insight into evolution. The BBC News announced “Bat fossil solves evolution poser.” National Geographic called it the icing on the cake, and said that […]
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Amazing Facts

Migrating Birds Measure Longitude
February 13, 2008
Migrating birds are able to get back on course, even when released 1000 km east of their normal migration path.  This shows that long-distance migrating birds are capable of true bicoordinate navigation: the ability to make course corrections both in latitude and longitude.  The results of experiments, published in Current Biology,1 left the researchers baffled: […]
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Genetics

Animals from Junk by Chance
February 12, 2008
How to build an animal: throw junk DNA at it.  That seems to be the latest idea on where higher animals came from.  A press release from University of Bristol posted on Science Daily and EurekAlert announced, “‘Junk DNA’ Can Explain Origin And Complexity Of Vertebrates, Study Suggests.”     The basic idea, coming from […]
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Amazing Facts

Did Birds Evolve Aeronautical Engineering?
February 8, 2008
Two news stories on birds may not seem to flock together.  One is about their supreme aeronautical engineering.  The other ponders when they evolved.     A story on EurekAlert and Science Daily describes how engineers are eyeing birds, bats and insects for design ideas.  The appeal is clear from the following comparisons: A Blackbird […]
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Dumb Ideas

Indebted to Darwin
February 7, 2008
Britain’s Food Standards Agency is concerned about diminishing fish stocks and is asking citizens to consume less, reported The Telegraph.  This can only mean one thing, thinks Ulf Dieckmann (International Institute for Applied Systems Analysis in Austria): it’s come time to pay the piper.  Who is the piper, you ask?  Answer: Charles Darwin. Dr Dieckmann […]
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Amazing Facts

Nose Code Rockets Smell Discrimination
February 1, 2008
You have a code in your nose.  Scientists working on fruit fly olfactory systems have found that a mapping mechanism between components maximizes the fly’s ability to discriminate smells.  The coding system provides a non-linear response that appears finely tuned to maximize the information content of odor inputs.     The components of this system […]
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Biomimetics

A Step Closer to Gecko Adhesive
January 30, 2008
Scientists are getting closer to imitating the amazing wall-climbing ability of geckos.  Science Daily reports that a team from UC Berkeley manufactured tape with hard polymer fibers just 600 nanometers across that mimic the spatulae on gecko feet.     This latest attempt at imitating the gecko works only on smooth, clean surfaces, but requires […]
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