In brief: Chris Comer, director of science curriculum, was pushed out after she sent an e-mail promoting a local talk by the author of "Creationism’s Trojan Horse: The Wedge of Intelligent Design". Comer merely sent a notice about the talk as an "FYI." The School board tried to claim that…
I’ve just read a good book about genetics. The Making of the Fittest: DNA and the Ultimate Forensic Record of Evolution by Sean B. Carroll. There is much food for thought in this book. One reviewer called it “A Primer of Evolutionary Theory for Beginners”, and this is accurate. One doesn’t need to know chemistry or physics to follow his reasoning, because he teaches the most necessary pieces.
Basically, this book examines what has turned up in studying the genomes of various species over the last couple of decades, as well as tracing genes from generation to generation in the same family line. It starts with a simple introduction to what DNA is, how it works, and how we know this. Then it gradually leads one to understand how genes transform from one generation to the next, and how this leads to speciation.
Basically, ever-present radiation, random chemistry, and aggressive biology cause frequent single-letter changes in DNA. Also RNA copy-and-paste errors regularly drop or duplicate entire gene sequences. After this see Darwin for how some mutations are explicitly preserved, some are inevitably removed, and most simply languish in or become fossil genes because there is no preference one way or the other. Carroll covers all this in many examples.
Carroll presents the simple probability and large numbers theory to illustrate the surprising speed at which populations can change, and then shows functioning (or no longer functioning) genes that have in fact visibly changed populations so rapidly.
This book gives plenty …
Listening to a talk show at work yesterday, I heard some fall-out from the recent suicide of the young girl who had been “duped” on MySpace. When I first learned of this tragedy, I ran through a series of thoughts about the dangers posed by the interfaces we use these days, which put us often too early and unprepared into contact with things in another era we would simply have had no opportunity to encounter. This girl was a casualty of the wavefront of experience that comes now in new forms and through media that never before existed.
I never once thought it was her fault.
How could you? She’d been deceived. Inexperienced, unwitting, she invested a bit too much, and it put her over the edge to discover that what she thought was “real” was in fact a deception.
History is full of examples of people committing suicide over things with only marginal reality. Especially among adolescents. We’ve learned in the last decade a great deal more about brain development than ever before, and one of those things is that adolescence is the time of some of the most intricate and fragile growth–physically–within the brain. The hormone storm that is unleashed at the onset of puberty, the growth spurts visible in every other part of the body, the physiological changes of emergent sexuality and secondary sexual characteristics, all have their equivalent in cognitive development. It makes perfect sense after the fact, but for a long, long time we blithely …
Writer John Scalzi recently visited the Creation Museum. He has written his report, assessed his impressions, and concluded...well, you should read his conclusions for yourself, here. I do not have Mr. Scalzi's flare for describing expensive nonsense in such finely satirical, subversive, and somewhat detached a manner. There is also a…
Why would a scientist pull a paper that he had out there for over 50 years? Because he is embarrassed that Creationists are eagerly citing parts of it as proof that life cannot have arisen spontaneously. Here's the story. That is not because he objects to religion, he said... “Religion…