Conveying science

I’ve been placed in the fortunate position of working with teens who need help. They’ve all dealt with drug issues and are trying to rehab while maturing and learning. I help in both areas, but I especially enjoy helping in the second realm.

Many of these kids have been out of school for years, so as a result they’ve missed quite a bit in life and formal education. In fact, even if they were in school, they probably have missed out on a lot of what I want to tell them. For instance, while in front of a world map, I told one kid a few basic geography facts while conveying the historic and biological significance of the Galapagos Islands. He really enjoyed it, learning it for the first time. He even enthusiastically told his peers what I told him, emphasizing how big the tortoises are on the island. But what really struck me was how interested another kid was in some basic facts about the Universe. I started by showing him this picture I’ve posted before:

This is an image taken near Saturn. The little blurry dot outside the rings on the right is Earth. A zoom of Earth is seen in the top left. It’s a great picture that really puts things into perspective quite simply. Showing it to this other person, I was genuinely impressed with the fact that he was blown away by the obvious insignificance of Earth and human life. I didn’t need to lead him to my world view.

I followed up on the image by telling him about light waves and the fact that when he sees starlight, he is actually looking into the past. Soon another “client” (I hate that word) joined us before “lights out” (aka., bed time) and I told them both about some scale-related facts, i.e., big numbers about the Universe. Not only did they love it, but I felt fantastic about it all. I love conveying science. In fact, they and I are both pretty excited about continuing the talk next week. Here’s the video I plan on showing them:

I think this is all great, from the video and beyond. These are basic facts about the Universe – everything is 13.7 billion years old, Earth is 4.6 billion years old, life has been around for 3.9 billion years, Earth is relatively insignificant, especially when compared to stars. It is extremely important that people have this frame of reference; I was so glad that, without any input from me, one client said he couldn’t imagine that there wasn’t other intelligent life in the Universe. I was more than happy to add my two cents. I mean, of course there is other life. There are too many stars, too many planets, too many opportunities. Other life is there. And his mind is already there – which makes sense. Anyone who has any degree of honesty and is fortunate enough to come to any degree of understanding necessarily recognizes how insignificant this pale blue dot is in the wide scheme of things.

I plan on more science talk, but I think the best thing I can do for these kids is bring them outside at night. If it happens to be a clear enough night, staring at the stars and contemplating the very basics of the Universe might be more than any drug rehab program can ever do.

Thought of the day

It’s true: Of all the mysteries ever solved, not one has been because of magic.

Scientists ahead of their time

“[I]f we could intervene in the antagonism observed between some bacteria, it would offer perhaps the greatest hopes for therapeutics.”

~Louis Pasteur

Marty Soule is a good person

It always makes me feel good when I see people promoting smart ideas:

The March 13 letter to the editor warning about not supporting Planned Parenthood because it offers the Gardasil vaccine would have wide-reaching effects if the warning were followed.

One would need to avoid all pediatric and family medicine practices; all physicians, nurse practitioners, physician assistants and nurses; the American Academy of Pediatrics, and the U.S. Centers for Disease Control.

The reason that health-care providers support the use of Gardasil and other vaccines is that they help to protect our children from terrible diseases. Immunizations given early in life allow our immune system to prepare so that it can protect us from disease later in life.

Gardasil helps to prevent cervical cancer. A friend of mine died of cervical cancer several years ago. I want to do what I can to protect others from that same fate.

Marty Soule

Readfield

Well done, Marty.

Ode to the Brain

This one is a little better than the last couple of Symphony of Science videos.

How penicillin works

I’m currently in the midst of a short break I’m taking whilst studying for a massive microbio test I have in a few hours. And what better way to take a break than to post about one of the essay questions I know will be on the exam?

β-lactam antibiotics include penicillin and cephalosporins. (Everything that follows applies to both, but most people seem to be more interested if the topic is the more familiar penicillin subgroup.) The way these antibiotic works is by attacking the cell walls of bacteria. This makes gram-positive bacteria more susceptible than gram-negative bacteria; gram-positive bacteria have an outer peptidoglycan layer whereas gram-negative bacteria have their peptidoglycan layer between a plasma-membrane layer and an LPS layer. (No, I’m not going to define all these terms I’m using.)

Transpeptidase molecules are necessary for catalyzing cross-linking of glycan-linked peptide chains. Penicillin, all coy and sneaky, causes transpeptidase to link to it (penicillin) instead. (Transpeptidases are known as penicillin-binding proteins, or PBPs. I find the name misleading since it sounds like their purpose is to get all buddy-buddy with penicillin.) This prevents cross-linking. As I’m sure every nerd knows, cross-linking is what gives the peptidoglycan outer wall much of its strength. So while cell wall synthesis continues unabated, no cross-linking is happening, thus weakening structural integrity. Mike Holmes would be pissed if he was a biologist and he saw this happening. (Come on, HGTV fans, I know you’re out there.) Furthermore, autolysins are being released. What this means is the gram-positive bacteria has a weak and self-degrading outer wall. Osmotic pressure eventually causes lysis.

Now please excuse me while I enter hour 6 of studying for the (literally) 109 other things I need to know for my upcoming test.

Happy Darwin Day

It’s the good man’s 202nd birthday.

It’s also Lincoln’s 202nd birthday. And he is an important and impressive figure. But not as important or as impressive as Darwin. Not by a long-shot.

The erosion of progress by fundamentalism

I found this great video with Neil deGrasse Tyson where he talks about the rise in intellectual accomplishments by those in the Middle East between the years 800-1100 and how everything went downhill shortly thereafter. The rise was brought forth through free thought and inclusiveness of ideas from all walks of life. Unfortunately, one influential fundamentalist Muslim convinced people that mathematics was the work of the devil around 1100. From there everything started to fall apart. To make his point, Tyson notes that there are well over a billion Muslims in the world while there are about 15 million Jews. And how many Muslims have won Nobel prizes? A couple. How many Jews? Probably close to a quarter. It isn’t because there’s something inherently superior in the intellect of Jews; it’s because fundamentalism erodes scientific (and social and moral) progress. We face the same problem with intelligent design creationism today. If as a society we were to follow the course of the Christians (and Muslims and sometimes Jews and others) who advocate for that sort of anti-scientific/anti-science position, we would find ourselves down a very worrying path indeed.

Two final points. One, my post title is different from the video title because Tyson is not talking about religion in general. Two, you’ve got to love what he says at the end:

I want to put on the table not why 85% of the National Academy [of Science] rejects God, I want to know why 15% don’t.

IBM’s Watson

Anyone who has watched Jeopardy! for a moment has probably seen the ads for IBM’s Watson. It’s a program which uses “deep analytics” in order to determine the answers, or rather questions, to clues on the game show. It basically (insofar as anything about it is “basic”) uses a massive library of knowledge in order to search out key terms and then utilizes statistics in determining the answer. It’s pretty impressive; I know I’ll be watching it compete against Ken Jennings and Brad Rutter on February 14, 15, and 16.

On abortion

Let’s get one thing out the way first. People who view abortion as being the murder of human beings are not inherently anti-women’s rights. Just the same, people who view the issue as being a fundamental choice that ought to be left up to women are not inherently pro-abortion, much less pro-murder. Both arguments are just dishonest rhetoric.

The question of the morality of abortion can be viewed from a number of perspectives, but I want to focus on the most common issue: When does life begin? I don’t think the answer is so clear.

My big motivation for this post comes from a number of red herring theists, none of whom were able to argue in a coherent fashion. Since they insisted on avoiding the topic at hand (the support for their position), instead demanding I answer their questions (about my position), they are welcome over here in order to appropriately address where I stand on abortion.

Perhaps the most tempting way to define the beginning of humanity is the point of conception. And there’s some good reason. It marks the point where the genetic material for a person all comes together. Usually. In some instances of twinning the embyo can split in two up to four days after it was conceived. As a result, we have two groups of cells that, provided everything goes to plan, will end up as two living, breathing newborns. The problem that this raises is that we can no longer call the point of conception the absolute beginning of humanity. In these instances, conception results in one set of cells. It was only after conception that a new set of cells emerged. Unless we’re ready to call that ‘second’ twin non-human, we have to abandon this imaginary line in the sand.

But let’s go with the most logical counter-argument: Okay, it isn’t that conception marks the beginning of humanity; it’s something about conception that makes that mark. In that case, what? I think the best answer is that it is the emergence of cells which can result in the birth of a newborn which defines the beginning of humanity. That covers twinning. (The fact that the aforementioned red herring theists could not articulate something so simple and obvious makes me regret the time I wasted giving them any sort of respect.) But this answer isn’t without its problems.

What is it about this emergence of cells that is special? What makes this moment so important? The most logical answer is that it marks the beginning of development. (The red herring theists confused development for humanity.) It is the point where cells can start to form a full organism. But what more is this than the arbitrary declaration that a certain level of potential development is important? When gametes come together, yes, that marks the start of development, but so what? It isn’t development itself. It isn’t a full organism. It’s just a baseless valuing of potential. I could just as easily point to the emergence of a fully formed gamete and say that that marks a key point in development. “Why, a sperm has the potential to become a human!” And I would be right. The counter-argument would be, “A sperm can’t become human on its own” and the easy response is that neither can two gametes just because they’re combined. The whole process depends on a massive number of factors. That’s why it’s a process.

I like to compare the arbitrary line-drawing to the mark of American adulthood: the age of 18. It isn’t like a 17 year old is appreciably less mature the day before his next birthday compared to the day after. The line is ultimately an arbitrary one. That doesn’t mean it doesn’t have value. The fact is, if we want to have a coherent system of law, we must declare some age as especially important in distinguishing between childhood and adulthood. Eighteen is a reasonable number. Just the same, we need to do the same with how we want to define what it means to be human.

Now I need to clarify even further (or at least re-emphasize). The starting point of development is a technical concept; it isn’t a difficult one, but it is technical. That is when we can say the road to humanity has begun. If we want to go further and say that that is the marker of humanity itself, then we need to explain why. That is, “humanity” isn’t some technical, scientific term we can apply to conception. (We can apply it when we’re talking about species, presuming we’re using it interchangeably with “Homo sapien“, but we can’t go beyond that; we can only say “That is a human egg/that is a human sperm/that is a human zygote.” When we start using “human” as a noun rather than an adjective, we’ve lost all embryological meaning.)

So that brings us to my position. As I said, the line in the sand isn’t clear, no more than it’s clear that an 18 year old is or is not really an adult. I do believe that if an embryo is a human being, then we must protect it. There are persuasive arguments, especially from Judith Jarvis Thompson, which say we don’t have that responsibility even if humanity begins at conception, but I don’t buy into them. I value human life highly and as a result I feel it necessary to protect whenever possible. But I reject the idea that conception is some magical point where some cells go from non-human to human. I still see cells.

I hope it is clear that it is the process of development where I see real value. It is patently absurd to say a human life begins at conception, as if development is unimportant to how a person turns out. Take another look at twinning. There is a point where everything is exactly the same between each set of cells. At that instance, there is no difference between the twins. So how can anyone say we are looking at two different humans? If there is no difference, there is no difference. And if that’s true (and it is), then there must be something else which goes into defining a human. We call that development. And that isn’t without its problems.

Just as the assertion that humanity begins at conception suffers much like the assertion that an 18 year old is an adult, the process of development suffers from a lack of clear lines. But it does offer reasonable lines. We can figure out viability, ability to feel, development of consciousness, and even employ caution. This often brings us to approximately six months. But I’m open to moving that mark. Maybe there are key factors in development which take place by five months, even four. Maybe those factors matter in how we define the important aspects of what it means to be human. A persuasive argument might get me to adjust my position. And in all likelihood, that position will only move down in number of months, if it moves at all. It seems there is too much doubt in moving up beyond seven months. Certainly at the eight or nine month mark that line in the sand has almost completely vanished; it wouldn’t be reasonable to claim a fetus is not a human at 9 months, 1 week, and 6 days, but when it’s born at 9 months, 2 weeks, why, we have ourselves a full-fledged human. That’s just as arbitrary as declaring conception the beginning of humanity.

So discuss the issue. But keep this in mind: while I don’t normally moderate comments except for obvious spam (such as ads), I will be moderating them here for blatantly dishonest (and bad) rhetoric. In other words, don’t call someone pro-abortion or anti-women’s rights merely for holding an opposing view.