A significant difference between humans and most other animals is that we have the innate ability to abstract ideas. That is, we can manipulate symbols as though they were things. We do this so well that most people are unaware that the symbols aren't actually the things they represent. If…
Those who have followed discussions concerning religious belief & non-belief know that it's never safe to say you've seen it all. Surprising and worthwhile new positions come along at predictably unpredictable intervals. Biologist Lewis Wolpert has now entered the fray with a new book, Six Impossible Things Before Breakfast, reviewed…
I listen extra closely whenever an organization dedicated to skeptical inquiry investigates a claim that is characterized as bogus by a loud minority. A new detailed report on global warming was published in the May/June issue of Skeptical Inquirer Magazine. Here's the primary conclusion: This paper will offer compelling evidence from…
As a general rule, simple questions, especially simple questions with purportedly obvious answers, are the most interesting questions.
While I attended a wedding this weekend, I noticed all of the sex partners seated together, you know . . . husbands and wives and boyfriends and girlfriends (and a few gay couples).
Why do sex partners sit together at public rituals, I wondered. The obvious answer is that it’s because most sex partners live together, right? Other people thus see sex partners as couples and feel that they should be invited to important rituals together, especially to important rites of passage, such as weddings. But why do so many sex partners live together (and hence get invited to prominent social events as couplets)? After all, instead of living with her sex partner, maybe a woman would rather live with (and then potentially be invited to go to weddings with) a non-sex partner friend or neighbor, or perhaps even her non-sex-partner plumber or accountant. Or maybe she’d rather attend public gatherings by herself, so that she could freely mingle. The norm, however, is obvious to anyone who bothers to scan the crowd at a wedding: the great majority of people who attend such gatherings attend them as sexually-paired couples.
Someone who followed the SSSM model might say that this behavior (of attending prominent rituals with your spouse) is simply learned, or that it is “social convention” or that it “feels right.” There is a compelling story that can be told about paternity …
You are sitting there smugly thinking that you are in charge of your own body, and that you should be, because it is after all your body. Well, you’re wrong.
The June 2007 Special Issue of Discover Magazine contains an article called “Your body is a planet.” This article, written by Josie Glausiusz, recognizes that the average human body has 100 trillion cells. (Remember how much one trillion is?). I would have provided the link for this Discover article, but I did not see it anywhere at the Discover site.
Here’s the money question: what percentage of those 100 trillion cells contain your DNA? The answer is only 10%. The other 90% of the cells in your body belong to “aliens”: bacteria, fungi and other microbes.
Most of the time we share our bodies harmoniously within 90 trillion or so microbes. But sometimes the arrangement turns contentious, as when bloodsucking bedbugs, fleas and lives in beta, or when herpes simplex or human papillomaviruses cause surface membranes to erupt in nasty pustules or warts.
These “visitors” include athletes foot fungi, Streptococcus sanguis (that resides in dental plaque), vaginal flora, the chickenpox virus that lies dormant (for the most part) near our spinal cords and the one trillion bacteria that live in the average human’s skin.
It is commonly known that helpful bacteria live in the human gut. Did you know, however, that the average human carries around 3.3 pounds of bacteria in the gut?
I also learned about demodex …