My latest column for Seed is now available online. It's an abbreviated summary of how vertebrates make segments (so it's illustrated with a fly…), with special emphasis on the global and clocklike mechanism we use.
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Vertebrates are modified segmented worms; that is, their body plan is made up of sequentially repeated units, most apparent in skeletal structures like the vertebrae.
Arthropods are also modified segmented worms. Look at a larval fly, for instance, and you can see they are made up of rings stacked…
tags: Birdbooker Report, bird books, animal books, natural history books, ecology books
Books to the ceiling,
Books to the sky,
My pile of books is a mile high.
How I love them! How I need them!
I'll have a long beard by the time I read them.
~ Arnold Lobel [1933-1987] author of many popular…
Jason Rosenhouse has dug into the details of the evo-devo chapter of Behe's The Edge of Evolution and found some clear examples of dishonest quote-mining (so what else is new, you may be thinking—it's what creationists do). I've warned you all before that when you see an ellipsis in a creationist…
Life has two contradictory properties that any theory explaining its origin must encompass: similarities everywhere, and differences separating species. So far, the only theory that covers both beautifully and explains how one is the consequence of the other is evolution. Common descent unites all…
Somehow, your column is always the first thing I read when a new issue of Seed comes in the mail. Lovely article, as always.
Me too! I always read your column in SEED first also. Great article, PZ!
I have to volunteer that I received my first issue of SEED in the mail today! Actually, the August and October issues arrived together, but I'm psyched.
Looking forward to the article, PZ.
Clearly, you should have been involved in that editorial choice, PZ. At least then we would've gotten a bonus cephalopod in the process. ;-)
Wait, they make segments, and not twists in toruses? Why do you hate balloon animals so?