Evidence of evolution: Giraffe’s laryngeal nerve

October 8, 2011

One of my favorite examples of evolution and how we can see it in living things today:  The laryngeal nerve of the giraffe, linking larynx to brain, a few inches away — but because of evolutionary developments, instead dropping from the brain all the way down the neck to the heart, and then back up to the larynx.  In giraffes the nerve can be as much as 15 feet long, to make a connection a few inches away.  Richard Dawkins explains:

All mammals have the nerve, and as a result of our fishy ancestry, in all mammals, the nerve goes down the neck, through a heart blood vessel loop, and back up.  In fish, of course, the distance is shorter — fish have no necks.

Tip of the old scrub brush to Pharyngula’s Sciblogs site.

Yes, the laryngeal nerve is sometimes called the vagus nerve, because it originates off of the vagus nerve.

Giraffe's laryngeal nerve, easily explained by evolution; paints of picture of an evil, joker designer otherwise.

Giraffe’s laryngeal nerve, easily explained by evolution; paints picture of an evil, joker designer otherwise.


Evolution teacher expelled from creationist movie

March 20, 2008

First the producers lied when they interviewed him for the film, claiming to be doing a different movie, a documentary. Then they refused to let him see anything that might reveal what of his own words they were using in the movie.

And now, the producers of Ben Stein’s great turkey of a movie, “Expelled!,” have booted the evolution teacher out of a viewing of the movie of which he is a star they promoted.

[Spew alert! Put the coffee/coke/beer down, and swallow before clicking on the link and reading the story linked to below.]

But having expelled the evolution teacher P. Z. Myers from the movie “Expelled!” and ironically making the point that the pretense of the movie only a pretense, the producer missed Dr. Myers much more famous guest.

Go, see, and laugh.

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