Archive for category 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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Book Review: Your Inner Fish

I discovered this book through a couple of the science blogs I read, as a follow up to news about the discovery of Tiktaalik, the first discovered quadruped fish (pictured on cover).

Neil Shubin, the author, was the lead scientist on the expedition far up north in the Arctic Circle where it was discovered.

This book is more than just a chronicle of his journey, or of the methodical process he and his colleagues use when determining where in the world to dig; This is, as the subtitle suggests, “a journey into the 3.5 billion year history of the human body,” exploring the minute details of our own bodies and comparing those oft-bizarre facets with our evolutionary predecessors.

It’s simultaneously informing and wondrous – when Shubin explains the development of the nerve pathways and bone structures in the head and neck, things, such as a shared tube among eating and breathing, start to make sense. When he shows other organisms that do not share those same inherited traits, but have developed other adaptations for their own environments INSTEAD, it’s even more amazing. Read the rest of this entry »

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Tracking Motivation

As I have mentioned previously, I often struggle with task-completion and self-motivation with some things.

Example: After commencement, when summer “break” began, I had started to read some Bioinformatics textbooks. One of my Profs is lending me a textbook they’ll be using for one of the courses, and I started reading it and taking notes — purely because I find it interesting.

Then I got a new book (Reason 4 Ignite, which I previously reviewed), and obsessively started doing that every day. Bioinformatics got shelved for the time being, along with all the passion and sincere interest in learning it. The thought of picking up the book and reading it actually repulsed me — normally, this might give some pause, but it’s nothing new; I’ve been through it many times. I know that eventually, that interest will come back around with the same intensity; I just don’t know WHEN.

What was different this time, though, is that it got me thinking: What if I could track these interests somehow? If I could collect enough data, perhaps I could find some cyclical nature to my interests and develop some reasonable expectations of myself. Heck, maybe a predictable periodic function would emerge, and I could create a differential equation to plot my interest in differential equations. The question is, of course, how do you quantify interest? Read the rest of this entry »

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My last undergraduate term paper EVAR.

Below is a copy of my term paper written for my Cell Biology course. I wrote it in a slightly less-formal style of scientific journalism, but didn’t spare on the technical details. Feedback, good or bad, is appreciated.


The Effects of the Consumption of Methylxanthines on the Adenosine Receptor System

Every year, humans around the world consume an estimated 10 to 20 billion pounds of coffee. (Gale) While some may drink it for the flavor, one can imagine it is probably the psychoactive stimulant, caffeine, that is the puppetmaster, beguiling we Americans to consume 200 mg (approx. 2 cups of coffee), and our northern European counterparts, up to 400 mg, every day. (ibid) For most people, it provides a useful mental edge: sharpening their focus and providing a subtle kick-in-the-pants of chemical motivation. Caffeinating over that sharpened-edge, however, can lead to disorders of sleep, anxiety, and even a jittery anxious quasi-hallucinatory state known as “caffeine intoxication”, all noted by the DSM-IV. (ibid) The other dark side is the silent escalation of tolerance to caffeine’s beneficial effects. Prolonged, regular exposure of caffeine can set up the consumer for an uncomfortable withdrawal period, ripe with headaches, myalgia, fatigue, and anxiety. (Ramkumar et al.) 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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