Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Tuesday, July 01, 2008

Simplicity itself

In the late 80s, James Gleick wrote Chaos: Making A New Science, an entertaining book that described the rise of the study of chaos. The book also helped popularize fractals. I recall going to an early 90s Lollapalooza where a fellow attendee pointed to a fractal t-shirt and said "woah, chaos theory." In Simplexity, Time science writer Jeffrey Kluger aims to repeat Gleick's success and detail the rise of a new line of inquiry that explores the inter-relationship between simplicity and complexity. While the book tells a number of entertaining and enlightening stories it does not weave these into a strong, compelling thesis. Do not expect the kids at Bonnaroo to get their heads blown by Simplexity.

The principal idea of the book is that defining something as simple or complex is not easy. He gives the example of the pencil, which appears to be terribly simple, but in fact is a complex assemblage of materials from around the world. Much more interesting is his study of how this is manifested in real-world situations. He asks about the complexity of jobs including truck drivers who have to gauge the reactions and behaviors of other people, the status of his machinery, the effects of weather and many other exogenous factors. The highly paid Wall Street analyst running a series of financial models may seem less complex by comparison.

The book is best seen as a collection of a science author's short pieces. The individual chapters are interesting, but they do not build to an conclusion. There is never a clear use of the idea of just what complexity and simplicity are. We just know that when you look at a problem or a system at one level it is simple and at another level it is complex. It is hard to know what to do with this information. Those interested in learning more should turn to the Santa Fe Institute, where as Kluger explains, much of the research in this field is being done. You can read more about its complexity research here.

Tuesday, May 27, 2008

Speak about destruction

Back in the high school days, a teacher probably showed you a movie with car crash victims or some horrifying images of lesion studded genitalia to warn you of the dangers of bad driving and over-frequent sexual behavior. Like those teachers, Mark Lynas with his book Six Degrees is trying to scare you and your government into shaping up.

The book describes what would happen to the Earth as the average surface temperature increases, degree by degree (Celsisus.) Each degree presents a new list of horrors including rapid desertification, super storms, the collapse of food production, the death of the oceans to the possibility of mass extinction.

While the first few degree changes are merely terrible, Lynas notes that the shift in temperature can create positive feedback loops where the build-up of carbon allows for even faster accumulation of carbon in the environment. For example, as the temperature rises, sea ice will increasingly disappear. That sea ice reflects quite a bit of energy back into space, so as it goes, more energy can build up on the earth raising the temperature further.

The book is aimed at someone reasonably current on science, but who is not an expert. His emphasis is on the processes and then the likely to possible results of the processes. He does mention specific problem areas (Pakistan running out of water, Florida disappearing, the Sahara creeping into Iberia) but he doesn't paint lurid disaster scenes. So don't go looking for them.

While the possible futures are terrifying enough, the real shock of the book is that Lynas says we have about seven years to start curtailing carbon use. While this is meant to inspire us into action, my reaction is like that of Hudson's in Aliens. It is hard to see the world getting in line behind an effective response in that time line. Still, if you are looking for a reason to see why we should be talking about carbon instead of Iran, this book will do it.

Wednesday, March 26, 2008

Dinosaurs

While not the best popular science book you will ever read, the Lost Dinosaurs of Egypt is a worthwhile story about dinosaurs lost and found. The book follows two storylines. In the first which lasts from 1910 to the early 1950s Ernst Stromer, a German paleontologist travels to Egypt and discovers a number of new dinosaurs. The two world wars then throw a monkey wrench into his career, eventually leading to the loss of the specimins he found.

The second story is less interesting and a bit bloated. It covers a group of American and Egyptian paleontologist who return to the area that Stromer explored and end up finding a new dinosaur of their own. The problem is that this story is padded with extra detail about the desert and geology that seems to be there to make the book longer. The story in itself just isn't as interesting as the complicated and tragic turns of fate that Stromer faced.

The book does emphasize the luck, determination and skill required to be a paleontologist, which was interesting to read.