Posts Tagged Science bitches!

Book Review: Good Germs, Bad Germs

by Jessica Snyder Sachs

When people think of “germs”, the connotation is generally bad. In fact, when you look up the word germ, the definition of “microbial organism” is usually followed up with “especially a disease-causing microbial organism.”

As a species, we traditionally don’t think too highly of our microbial co-habitants. Store shelves are covered with products that tout their effectiveness at killing “99.9% of germs and bacteria”.

But are they all bad? In recent years, more awareness has been growing about “pro-biotic” diets and lifestyles; one that introduces “good” bacteria into the body. Nobel Laureate Joshua Lederberg, a pioneer in microbial research, believes that “[w]hat’s important is that we’re better off aspiring to a relationship of symbiotic coexistence.”

And that is the crux of this book. Sachs makes a very strong case for the need to delineate a difference between beneficial microbes and harmful microbes, in the same way that we may differentiate between beneficial small animals (dogs, cats, turtles) and harmful small animals (vipers, porcupines, brown recluse spiders). We have many bacteria (microflora) living inside us that are absolutely critical for our existence — digesting food we cannot otherwise digest, producing chemicals that make our body function better, etc. Read the rest of this entry »

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Contextual Learning

One of my profs and I occasionally chat about his curriculum. This was his first year teaching at IU East and he’s still fine-tuning his style. The main roadblock he runs into, and I can totally understand, is that a lot of his students have a very nonchalant, sometimes completely ambivalent, attitude towards the course material.

One thing I suggested, for when he teaches Organic Chemistry next year, is to draw in real-world examples to help illustrate and provide context for the material. I call this “contextual learning” (there may be a more official title for it, but I wasn’t an education major, so I’m just going to call it that). Read the rest of this entry »

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Book Review: Napoleon’s Buttons

This is by far the most interesting book I’ve read this year (and is a definite contender for the “all-time” best, as well!)

The premise of the book is “17 molecules that changed history.” From cotton to caffeine, scopolamine to saponin, this book colorfully lays out both the chemical nature of these significant molecules, explaining how they function and WHY they work the way they do; it also illustrates the historical impact, going into great detail about how the course of history was heavily affected by the molecular properties of the topical substance.

The author explained in her introduction that her publisher had initially balked at the idea of using the actual chemical structures in the text — perhaps it was the intimidating look of an organic stick structure that threw them off; But Le Couteur does a terrific job of demystifying these seeming cryptic diagrams, using arrows, circles, and notations to indicate key differences in otherwise similar structures.

In spite of this, Le Couteur’s main focus in the book is not on the technical chemistry, but rather on the historical relevance.

I find that when I’m learning something, the more connections I can form with an idea, the stronger my memory — this book is a powerhouse in that regard; the knowledge of the structural nature of these compounds (at least the relevant functional groups, anyways) coupled with the historical relevance, creates memorable, almost mnemonic, impressions in my mind.

One of my favorite stories from this book was about Isoeugenol (one of the key chemicals in the common spice “Nutmeg”). Centuries ago, before America declared its independence, the English and the Dutch were top world powers. The Dutch’s East India Trading Company dominated the spice islands, Indonesian region, and pursued Captain Jack Sparrow to the edge of the earth. They also controlled Manhattan island (then called “New Amsterdam”).

The British controlled the isle of Run, a tiny island down n Indonesia, near Australia. It was a fairly non-descript island, save for one particular feature: It contained a LOT of nutmeg. At the time, both the Dutch and the British were dealing with the plague, and Isoeugenol, found in nutmeg was believed (somewhat correctly) to help prevent the spread of that disease.

After some fighting, some discussion, and some agreement, the two nations traded the isle of Run for Manhattan island. The plague passed, and everyone moved on. It is quite likely that Holland would have yielded New Amsterdam eventually anyways, since the British presence in the New World was more prevalent, but who knows how things would have turned out that way!

If you enjoy non-fiction, particularly historical or science-oriented, this book is a must read.

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An Open Letter to Andrew Alexander, Ombudsman at the Washington Post

Subject:
Please start double-checking George Will’s facts when he talks about science
Body
I don’t know if you’ve been following Carl Zimmer’s blog, “The Loom,” and if you haven’t, you may want to read today’s post  – it covers the outline of the “saga”, as Zimmer calls it.

The fact checkers FAILED. Citing a blog in lieu of contacting the original source is *NOT* good fact checking; particularly when you are reporting something as a FACT rather than an INTERPRETATION. If Will had written “The DailyTech blog interprets the data from the Illinois center as….” that would warrant fact checking to the DailyTech blog — but that’s not what he did. And his fact-checkers neglected to contact the center for the study AT ALL.

As for the issue of ice — I don’t care what you or anyone thinks about Global Warming, Climate Change, whatever the spin doctors are calling it these days — Will is misrepresenting the issue by focusing on two discrete moments in time; some would call this “cherry picking”. Consider, for a moment, that I were to compare the amount of snow in Washington D.C. on February 1st 1979 to the amount on February 1st 2009 — can I reasonably draw ANY conclusions regarding overall trends of snow? Whether the snow is less, more, or the same, it is meaningless without a swath of aggregated data across the 30 year time-span. And yet, that’s exactly what Will did.

The Center that Will cited has a couple charts up that illustrate my point, see here:
http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/current.anom.jpg
and here:
http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/current.anom.south.jpg

The drastic ups and downs have an overall downward trend — but if you pick *JUST*  1979, at the low point, and compare it to the high point of 2009 — they are almost the same. But this totally misrepresents the data!

George Will may want to capitalize on the mock-troversy regarding Climate Change, and he apparently feels he knows the subject matter better than folks who study this professionally, but he is not doing humanity any favors by misrepresenting an issue simply so he can seem like a rebel.

Aaron Hill

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Book Review: Physics of the Impossible

Let me preface this by saying that I do like Kaku as a writer — Hyperspace is still one of my favorite books (I’ve given it as a gift on 3 separate occasions), and his followup “Visions” was equally good.

This, though… I was disappointed. But only because I’ve read all of his books up until now.

The content was interesting, but I really didn’t see much that I hadn’t already seen in his previous books — it was just written in a way that assumed the reader was slightly less scientifically / physically literate, contrasted to how his previous books were.

If you’ve never read his work before, and are curious for a nice smooth survey through some rather sophisticated aspects of the physical sciences, then the book is definitely worth reading — seasoned Kaku fans will be disappointed though.

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