Showing posts with label evolution. Show all posts
Showing posts with label evolution. Show all posts

Thursday, August 25, 2011

Hear, hear!

There's a great op-ed piece by Richard Dawkins in the Washington Post, where he excoriates politicians that are ignorant of evolutionary theory and milk that fact for political gain. The best quote?

"... a politician’s attitude to evolution, however peripheral it might seem, is a surprisingly apposite litmus test of more general inadequacy. This is because unlike, say, string theory where scientific opinion is genuinely divided, there is about the fact of evolution no doubt at all. Evolution is a fact, as securely established as any in science, and he who denies it betrays woeful ignorance and lack of education, which likely extends to other fields as well. Evolution is not some recondite backwater of science, ignorance of which would be pardonable. It is the stunningly simple but elegant explanation of our very existence and the existence of every living creature on the planet. Thanks to Darwin, we now understand why we are here and why we are the way we are. You cannot be ignorant of evolution and be a cultivated and adequate citizen of today."

Couldn't agree more, and this goes for politicians here and back home!

Thursday, May 01, 2008

Pod Mrcaru - High Rates of Selective Change in Italian Wall Lizards

In class today, I referred to a recent report on very fast rates of evolution in allochtonous Italian wall lizards (Podarcis sicula) introduced from a neighboring island to the Croatian island of Pod Mrcaru in 1971. It appears that, on top of outcompeting the indigenous lizard population, they have undergone extremely rapid morphological change in less than 40 years, evolving new gut adaptation (i.e., cecal valves, to slow down the passage of food through the gut, to favor digestion of plant matter) and a squatter, more robust skull better suited to chewing plants, which constitute the main source of lizard food on the island. The report, perhaps a bit exaggeratedly, refers to this as "fast track evolution."

The rapid physical evolution also sparked changes in the lizard's social and behavioral structure, he said. For one, the plentiful food sources allowed for easier reproduction and a denser population.

The lizard also dropped some of its territorial defenses, the authors concluded.

Such physical transformation in just 30 lizard generations takes evolution to a whole new level, Irschick said.

It would be akin to humans evolving and growing a new appendix in several hundred years, he said.

"That's unparalleled. What's most important is how fast this is," he said.

Neat stuff. The report includes some cautionary statements by a McGill biology professor (Andrew Hendry), but overall's he seems on board with the gist of the study. The article version of the study can be found by clicking here, and some good comments were provided on several blogs, including Pharyngula and GrrrlScientist.

Tuesday, November 13, 2007

McGill Journal of Education Helps Fight Creationism

I saw a few mentions of this online over the past two weeks, but only had time to check it out in detail today: The current issue (Vol. 42, no. 2) of the McGill Journal of Education is dedicated to the "Teaching and Learning of Evolution". It comprises an editorial, six research papers, two opinion pieces and a book review, all revolving around that central theme and all provided with English and French abstracts. Also, they are all available in pdf format free of charge, though you have the option of contributing a few dollars to keep the journal open access. There's some really thought-provoking and useful content in there if you have any link to the teaching of evolutionary biology, geology or any related discipline.

I'm especially glad that this is being published by a journal linked directly to McGill University, where I currently work, and to its Evolution Education Research Center, led by Brian Alters., who was one of the witnesses during the Dover trial. In related news, since I don't get PBS around these parts, I simply can't wait to check out PBS' "Judgment Day" available online in its entirety starting Nov. 16, 2007. 'Liveblogging' of the show from a number of trustworthy sources suggests it is quite a good program.