On the supposed bottleneck 70,000 years ago 3 May 2008 John Hawks has a very nice post for people with basic math, explaining why a recent press release announced that 70,000 years ago the human species encountered a population bottleneck of 2000 individuals, and why it’s most likely wrong. In the process he explains effective population size. It’s a tad too complex even for an Intermediate Concepts post, but still worth the effort. Larry Moran at his blog has opened a comments thread, as the Hawks blog is comment free (I am unsure if I should be censorial or jealous), and John promises to come back and answer them. Evolution General Science Species and systematics
Evolution Visualising Darwin 6 Sep 2009 PZ Macrabbit has already mentioned this, but I thought I’d pile on: it’s a Javascript utility that shows you how Darwin edited the six editions of the Origin over the course of his life, by Ben Fry, who lets you download the program Processing (now that’s a name!) for free…. Read More
Epistemology Notes on novelty 2: Historical considerations – before and after evolution 18 Dec 201122 Jun 2018 Notes on Novelty series:1. Introduction2. Historical considerations – before and after evolution3: The meaning of evolutionary novelty4: Examples – the beetle’s horns and the turtle’s shell5: Evolutionary radiations and individuation6: Levels of description7: Surprise! 8: Conclusion – Post evo-devo The roots of novelty in biology are very deep. They go back at least to Aristotle’s book… Read More
Evolution Levitt on Fuller 19 Dec 2007 As I mentioned earlier, I love a good book review if it excoriates a stupid book. Norman Levitt, of Rutgers University, has an absolutely lovely piece of critical invective for Steve Fuller’s defense of Intelligent Design here. Fuller is a sociologist philosopher* of science who seems to dislike science intensely,… Read More