James GormanReseñas

I can't help but think if I actually finished this when I started it in summer of 2009 I might've found genetics/biochem sophomore year a lot more interesting and would've done better, but that's playing the coulda shoulda woulda game. Fascinating read, especially considering what it would take to produce atavistic features in a chicken.

This book was given to me by my father many years ago. Why? I'm not sure. I guess like most kids, I was into dinosaurs and earning about them, like animals. Maybe I was doing a report on them at the time. Either way, somehow I ended up with this book and I can't seem to remember how.

After finally reading this years later, I actually found this interesting. I think the time this was given to me it would be over my head. Needless to say, this book is actually an easy read. This was obviously written for the everyday person rather then a dinosaur-know-it all.

I'm still interested in dinosaurs I discovered. Maybe it's because I'm a duck owner I have an interest in learning all things ducks. Oddly, this book talks about duckbilled dinosaurs. That made me really happy. This book includes some nice (mostly black-and-white) images of the dinosaurs too. I can see they do look like ducks in someways.

Last year I read Jane Goodall and this book kind of reminded me of her book. I'm not really interested in science or science books, but when animals are involved, then I seem to be actually want to read science books.

Super interesting. I hope this guy gets to engineer a real Dino. The book has some fun range -from detailed descriptions of Montana's Paleontology history through the technicalities of gene splicing. If you like dinosaurs and are interested in the future of biotech and it's potential, this is a good book.

humorous essays

This is a horribly written book. There is a ridiculous amount of completely irrelevant filler, a few interesting dinosaur bits and pieces that have nothing to do with the book title (and presumably subject) and then a magazine article length section on "how to build a dinosaur" by fiddling with chicken genomes, along with how the general public is going to freak out about it. The author spends the entire first chapter babbling about a town in the middle of nowhere, how to get there, local gossip and a bit of local history i.e. irrelevant filler. Then there is a section on finding evidence of dinosaur blood cells and collagen, with some pointless pot-shots at creationists (they might be crazy but do you really have to include it in the book, especially since it doesn't accomplish anything?), and too much details about the scientists personal life. The sections dealing with the techniques used was interesting, but there was too little substance and far too much filler. The writing is also simplistic but overly verbose, and got boring after a while.

NOTE: The book was published in 2009, so some of the scientific data discussed may well be out of date by now, especially anything related to genetic alterations.

The book goes over the potential of how to make a dinosaur in this day and age and the theory of how to do so. The entire first portion of the book is a recount of the history of dinosaurs and their evolution thereof. The second part of the book pertains to gene manipulation concerning drugs versus master genes using chickens as a base genome example. The last portion of the book goes over the concise Evolution from bird to mammal and explores the theory of reversing evolution.
A great read if you can follow it. There is a lot of scientific verbiage that would be difficult for the layman do you understand. Very interesting theories and very entertaining overviews. Jack Horner takes you in depth in seeing just how close we are to creating the Chickenosaurus.

I can't help but think if I actually finished this when I started it in summer of 2009 I might've found genetics/biochem sophomore year a lot more interesting and would've done better, but that's playing the coulda shoulda woulda game. Fascinating read, especially considering what it would take to produce atavistic features in a chicken.

Not as good as hoped for. Horner does make the case for trying the proposed experiments and it looks like it might just work.

In a sense, the dinosaurs never actually died out. Their direct descendants are still all around us today, in the form of birds. In fact, scientifically, birds are dinosaurs, even if, externally at least, they don't look much like the images of dinosaurs most of us hold in our minds. Well, not yet, anyway. But paleontologist Jack Horner has a plan to make that happen. He figures that it should be possible to alter the embryonic development of a bird -- specifically, a chicken -- in such a way as to recreate the development of its dinosaur ancestors, giving it teeth, a long tail, and clawed forelimbs instead of wings. He believes that the process of figuring out how to do this would teach us a lot about dinosaur and bird evolution, provide a useful educational experience for the public, and perhaps yield new medical insights that could be used to prevent birth defects in humans.

This book is about that freaky, fascinating idea of his and how it might be achieved... supposedly. I mean, that's what the title implies it's about, and what the dust jacket says it's about. In reality, he mentions the chickenosaurus in the introduction, and then basically doesn't talk about it again for the next two-thirds of the book, only really going into it at all in the last two chapters. Of the rest of the book, some of it provides some moderately useful scientific background on embryonic development and evolution, and some of it is interesting even if it's not entirely relevant, but a lot of it feels like digression and padding. And not even particularly well-written digression and padding. Ultimately, it seems to me like the subject matter here would have been better served by a long magazine article or two than a book, even a fairly short one like this. And the book would have been better served by being clear about what it wants to give its readers. Because promising that you're going to tell us about turning a chicken into a dinosaur and then instead launching into fifty pages on the history of Montana is about the worst bait and switch ever.

This book is a very interesting book about the history and evolution of modern birds, namely the humble chicken. It is also about the history and development of what may be the most fascinating group of animals ever, the dinosaurs. The book covers the question of whether it is possible to create a clone of a dinosaur in the same way it is done in the movies; however maybe it is not a question of cloning, but biological reverse engineering, aka “reverse evolution.” I found the book well written and very convincing. I look forward to seeing where this science leads us.

The study of dinosaur fossils has reached unprecedented heights and complexity. DNA can be extracted from tiny bits of bone and molecular biology is starting to unlock more and more pieces of the ancient past. Jack Horner, distinguished paleontologist and winner of a MacArthur Genius grant, along with James Gorman, bring together the fields of paleontology, paleobiology, paleobotany (and all the other paleo-s) with modern science to make a case for the creation of a living, breathing dinosaur. How to Build a Dinosaur is a look into the science involved as well as the scientists behind the discoveries leading the way.

Horner and Gorman’s thesis is that a chicken egg or fetus can be successfully manipulated in such a way as to hatch a dinosaur. Genes can be spliced, dormant sequences can be reactivated, and evolutionary changes can be undone. Once all the detritus has cleared, what would be in front of you could nominally be called a dinosaur. Since birds evolved from these ancient lizards, it makes sense to start with them and work backwards. The authors explore the science of evolutionary development to show what it can do and what implications this has on modern species.

I really enjoyed this book. This is science told by someone who is truly passionate about it. He starts with a problem and gathers together better minds to help solve it. Along the way, we hear the back stories of many scientists (and even a few fun anecdotes) about how they learned to love their fields. Granted, there are bits that could be cut to make the book tighter, but I think the rambling bits add color to what would have been a rather rote tour of the field. Horner’s infectious love of paleontology is apparent, and the book is richer for it. An informative and fun read.

If paleontologists were musicians, Montana State University’s Jack Horner would be a top-of-the-charts superstar. A consultant on the “Jurassic Park” films and frequently interviewed for documentaries and educational programs on dinosaurs, Horner is perhaps one of the best-known paleontologists among laypeople. Horner has consistently stayed at the forefront of paleontological research and the latest theories about those extinct monsters which have captured the imaginations of millions of schoolchildren. His latest book, “How to Build a Dinosaur,” is the logical extension of much of his earlier work.

Horner begins with a brief overview of the history of paleontology as a science, leading up to recent efforts to marry paleontology and the several branches of biology and genetic sciences, their aims often being mutually beneficial. He discusses recent work being done along those lines, including the study of dinosaur bones at a molecular level and attempts to ascertain whether it is possible to find organic material such as blood cells and collagen inside fossilized bones.

Marshalling his evidence, Horner then moves into the true thrust of his book…the recreation of extinct species using genetic techniques. Far from being a true “Jurassic Park” scenario in which scientists will be able to recover and/or reproduce dinosaur genomes in order to engineer extinct species, Horner instead posits what he believes to be a more realistic method of rewinding evolution’s clock. According to the precepts of a relatively new branch of science known as evolutionary development, or evo-devo for short, it should be possible to alter the development of avian embryos – birds being the evolutionary descendants of dinosaurs – to reconstruct atavistic traits and produce, for example, a chicken with a tail and teeth like a dinosaur’s. While, of course, it is not true that ontology recapitulates phylogeny, Horner argues that it should still be possible to utilize this sort of forced evolutionary regression to discover the specific mechanisms of the development of species. Horner also discusses issues related to the ethics of experimenting on animal embryos and of creating a “chickenosaurus.”

Clear, compulsively readable, and engaging, Horner’s book is certain to appeal to anyone who

The title How to Build a Dinosaur is, on its own, both intriguing and kind of misleading. It kind of suggests a how-to guide for something that's already been done, for something that science has already accomplished. However, the book itself is not about the actual building of the dinosaur, but about a new kind of science that could, conceivably, allow such a thing to happen.

Was this disappointing? Kind of, though I suppose that if someone had actually managed to reverse-engineer a dinosaur I'd have heard of it through some major news channel, or at the very least through National Geographic. It's the sort of breakthrough, after all, that would definitely garner heavy news coverage. A living, breathing dinosaur, even if it isn't as spectacular as T. rex or even one of the larger and more famous herbivores, would definitely make a lot of noise in the media, and it would definitely make more than a few headlines.

Happily, the disappointment didn't last very long once I really started reading the book. Jack Horner, one of the most famous paleontologists in the world (not the least because he was one of the primary consultants for Jurassic Park) writes in his Introduction how he, like many other paleontologists, would like nothing more than to "Bring 'em back alive." Sure, bones and "mummies" are all well and good, but it's nothing compared to the living, breathing animal. However, since all the dinosaurs went extinct 65 million years ago, this isn't something anybody can do, right?

That might not necessarily be the case. For some time now many scientists have come to the consensus that birds are actually the descendants of dinosaurs. You read that right: birds did not simply evolve from dinosaurs (like we evolved from chimps), but are descended from them - or at least, a branch of the dinosaur family tree that, interestingly enough, includes the raptors and some of the larger, meat-eating dinosaurs. In fact, scientists have concluded that T. rex's closest living relative is the bird that goes by the scientific name Gallus gallus - otherwise known as the chicken.

This link between birds and dinosaurs is one of the anchor points of Horner's proposition, or "campaign," as he calls it in a later chapter. He talks about the science of evolutionary developmental biology (evo-devo or devo-evo for short), which is a combination of embryology, molecular biology, genetic engineering, and some paleontology on the side, and how it could take a chicken embryo and carefully manipulate specific genes so that what hatches out of the egg isn't a chicken, but something like it, exhibiting atavistic traits - traits which belong to a more primitive ancestor. One can, in short, reverse-engineer a chicken into a dinosaur.

The idea, laid out in a direct manner like I've just done, might sound absurd, more like the premise for a sci-fi story instead of actual science. Fortunately, Horner takes his time to build his case, offering factual evidence in support of the experiment he's suggesting. How to Build a Dinosaur doesn't describe the process as a past-tense, done-and-over-it sort of thing. Instead, it presents the process as an almost magical possibility, one that can most definitely be accomplished if enough time, effort, and of course, money are put into the endeavor. If that's the case, it's entirely possible that the first living, reverse-engineered dinosaur will hatch within my lifetime.

This does not mean, though, that it's going to be easy. Horner makes that clear as well, describing the sort of research that must first take place before scientists can even begin to play around with a chicken's genes to get the results he's suggesting. Take the tail, for example. Dinosaurs have them, but birds, including chickens, don't. You'd think it'd be easy for scientists to figure out which genes they need to tweak to give a chicken a tail, but as it turns out, it's not so straightforward as that. Scientists haven't really done research into tails, so they're only now really beginning to focus on it (in the hopes of finding solutions to deadly spinal mutations in human embryos), but Horner hopes that whatever is learned in that department can be used to make a chicken into a dinosaur.

The appendix contains two images: one of an Saurornitholestes, a small dinosaur from the same evolutionary branch as birds. The other is the hypothetical Chickenosaurus, the possible result of reverse-engineering a chicken embryo into an atavism. It is these two drawings that, I think, drive home Horner's point in the best way possible, especially when you see the incredible similarities between the skeletons. The drawings prove Horner's point: with enough research and study, it is entirely possible to turn a chicken into a dinosaur with just a few genetic tweaks here and there.

Horner's enthusiasm and determination to "Bring 'em back alive" is very clear in the book, and it's easy to get carried away with it, especially if you're a dinosaur enthusiast and hence share in his hopes. Fortunately, this enthusiasm is balanced by the realism essential to many a scientist, and he describes the pros, cons, and difficulties of the course he is determined to explore, and is encouraging other scientists to explore. He knows it's possible, but he never, ever suggests it'll be easy. This pragmatism is something I completely approve of.

Another interesting (and valuable) thread that runs through this book is the fact that scientists from different fields really have to work together if they are to understand the story of life on Earth. The study of evolution has benefited from the input of the various branches of biology, but Horner is of the opinion that if the field is to truly move forward, it is time to come together and bring the skills and concepts essential to these (usually) disparate fields to bear upon one another. He espouses an interdisciplinary approach, one that will allow fresh eyes and fresh skills to come to bear on the study of evolution and, hopefully, yield new and incredible insights into life itself.

The only snag that I can see with this book is that it really is specific to the dinosaur enthusiast, even more specifically someone who's more scientifically inclined. A lot of this book would have been difficult and somewhat confusing if I hadn't read books like Dawkins' The Greatest Show on Earth and Lane's Life Ascending before starting on this one. The bits focused on molecular biology, in particular, can be slow-going if you haven't really read up on the basic concepts. Not to say that Horner doesn't attempt to simplify everything in layman's language, but I'm glad that I read Life Ascending first, since it explains the details of molecular biology in a more comprehensive manner than Horner does (or can't, really, given the scope of his book). After reading Lane's book, the more technical bits of How to Build a Dinosaur weren't so bad.

From now on, I'm holding out on the possibility of having my own pet Velociraptor in maybe ten or twenty years, maybe sooner, given how quickly science and technology progress. And if they can do this same process on an ostrich, well... I've always wanted a pet Deinonychus too, which is even better since I can put a saddle on that and ride it around. Imagine the amount of money I'd save on gas and parking, plus the reduced - immensely reduced - likelihood of theft!

After all, if my personal transport comes with its own anti-theft system consisting of massive sickle-shaped claws that can disembowel anything, plus a head full of razor-sharp teeth, I don't think I really need an alarm.

Jack Horner is my favorite paleontologist. Watching him on countless dinosaur documentaries, he established himself as a popular scientist; one of those rare individuals who has the kind of personality that entertains and educates at the same time. How To Build A Dinosaur is part memoir, and part what the title suggests. I guess I wanted to hear more about the latter, although the former is not uninteresting. The book is a little too short to do justice to both, however.

Horner suggests that with adequate funding (anyone have a spare million or 10 to sponsor this?), we could activate long-dormant dinosaur traits in the humble chicken. This includes chickens with usable claws instead of wings, and teeth. Such a critter would still be genetically a chicken, and if it mated with another, the result would be a source of McNuggets and Buffalo wings. However, the creature would still display the outward traits of a dinosaur, and if the life form is viable, some valuable research could be conducted. Jurassic Park this is not.

Horner believes such an experiment is possible, but also thinks he's a little too long in the tooth to be the one to do it. A younger scientist will pick up the mantel, but I think it would be cool if Jack is still around to write the account of it.

Excellent tale of the great dino-egg discoveries.

Not just a coffee table book. Yes, it does contain some nice photos, but balances those with some interesting writing as well.

I enjoy good dinosaur books as much as any former nine-year old who still reads science as an adult. How to Build a Dinosaur by well-known paleontologist Jack Horner, however, is not one I'd recommend. The author's name caught my eye immediately and the "Extinction doesn't have to be forever" subtitle paired with a cover image of a dino paw breaking out of an egg shell stirred thoughts of recreating an extinct beast a la Jurassic Park.

Horner's discussion of fossil finds, genetics, and pure science kept me reading, but his end game -- seeking funding to manipulate a chicken's embryonic growth to simulate a dinosaur -- was anti-climactic. I'm not saying it wasn't an interesting idea; it just wasn't the science I had expected.

It's true that chickens host many genes inherited from dinosaurs. And some inactive genes can be prodded to activate. But much of the old genome (the dinosaur gene set) did not get passed down and no amount of embryonic poking will recover it. A manipulated chick would become a strange little chicken -- not a dinosaur -- no matter what the ancient relationship.

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The title and especially the subtitle of this book are somewhat, deliberately, misleading. Paleontologist Jack Horner was a consultant on the movie Jurassic Park, however, he is quick to point out that he does not propose, or have any idea how, to produce living examples of Tyrannosaurus Rex or the much touted Velociraptor. He wrote this book, with the help of New York Times science editor, James Gorman, to propose the idea of modifying the development of a chicken, to express the dinosaur like traits of a long tail, teeth and forelimbs with clawed fingers.

This book is written in the realm of science popularization. Like Stephen Jay Gould and Carl Sagan, Horner chose to write a book explaining his idea to the general public. Why? Most popular science books are written about advances in science that are already accomplished. This one is a proposal for experiments that scientists do not yet know how to perform. By doing this he has made the reader a part of the process, the way science is really done. Here is a thought experiment that may or may not ever be tried in the laboratory.


What the book does is show how ideas are bandied about in scientific circles, how new experiments are proposed and argued for and against, how they are not necessarily ever given the chance to see the light of day. The work needed to produce this chickeasaurus would cost many millions of dollars.

There would be a lot that could be learned from the effort, according to Horner, about the development of embryos, which could be applied to medical science, possibly preventing birth defects in human children. Or possibly producing embryologically modified, designer ubermenschen. Producing a dangerous invasive species that would have to be fought and destroyed by the air force is an impossibility, however. Science fiction fans will have to live with the disappointment.

Horner says that the traits that he wants to produce, a tail, teeth and clawed forelimbs, are already present in the genes of the domestic chicken, which is a descendant of an upright walking dinosaur. Horner insists that birds ARE dinosaurs and not just their descendants. His proposal is to learn how to trigger, and to stop, certain traits that appear during the development of the chicken embryo, in order to make the tail, teeth and forelimbs appear in the hatched adult chicken. His would not be a genetically modified creature, just one that had been coached along the way to be more dinosaur like than bird like.

I rather like dinosaurs. The chapters in which he discusses the latest discoveries and theories in paleontology were, to me, the most intriguing of the book. Although I can see that there would be spin offs, like those from the Apollo space program, from his chickenasaurus proposal, I was have not really bought in to the idea. Maybe you will think differently. Horner says that he would like to be able to bring a chickenasaurus out on a leash, when giving a lecture. King Kong anyone?

I'll Never Forget The Day I Read A Book!

There is a recurring problem with American authors: apparently writers must produce a minimum number of pages in order for a book to be to published, even when the core ideas can only fill half of them. In the case of "How to build a dinosaur" by Jack Horner, the mix is:

30% description of a great idea on how to test evolution by “recreating” a dinosaur staring from a chicken;
50% repetitions of the same idea over and over;
20% irrelevant and boring descriptions of marginal details.

IMHO, reducing everything to a 100 pages book would make this a smaller but perfect book.

It’s like mixing half a glass of Bordeaux with half a glass of water. You can’t avoid thinking how much better would be enjoying the pure wine, without the water!

So, I read this book thinking that it was going to be really awesome because I had seen the show he was featured in on the Science Channel at the beginning of the summer. Not only was I incorrect about the awesomeness of the book, but I was also incredibly incorrect thinking that he knew how to write. Horner is just all over the place with what he's talking about.First he's talking about excavations, then he's talking about someone Else's discovery, and then he's talking about collagen, and then a chapter or two later he goes back to the excavations, etc. He spends a long time just describing the area of Montana that they're excavating. Thanks Jack Horner, but I don't need half a chapter of you telling me that in Hell's Creek you can straddle the eons easily. I also don't care about you not believing that you could POSSIBLY find red blood cells, or remnants of red blood cells inside of a fossilized bone. They're fossils, you're a paleontologist, you're supposed to be open TO EVERYTHING. Well, not everything, but you should be less of a pessimist when it comes to what you're going to find. So, yeah, I got really angry while reading this book, because it seems like he has NO idea of how to lay out a book properly, nor does it seem like he knows how to get straight to the point. So thanks Jack Horner, for making me think that I had more to learn about making chicken embryo into dinosaur embryo. Thank you also, for making me waste 26$ on a book filled with what I learned on the Science Channel, in a show that you were 10 times more intresting in.½

I started this book thinking it would be about manipulating the genes of a chicken to give it dinosaurish characteristics, with an eye to the science behind this. What I got was a book that read like it was intended to solicit funding from a disinterested third party. There is still some good info here, but I think the real book will come after Horner receives more funding.½

Excellent read, but slow at times. Very informative.

A fascinating mystery story. Not a novel, but the slow discovery of details of lives long past.

about finding nesting species

567.9