Archives
Just a couple of years ago, I wrote a column about the advent of tearless onions that included some background on why onions make us cry in the first place. Ordinarily I wouldn’t revisit a topic quite so soon, but you know how it is with science: things change fast, and just this week there was breaking news in the field of onion-induced tears.
Well, as breaking as any news can be when it deals with something that’s been around for half a billion years.
Onions have always made humans cry, or at least for as long as humans have been eating them, which seems to be a long time indeed—so far back in pre-history that we can’t even say for sure ...
Posted by Edward Willett at 22:46, March 26th, 2010 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/11/Measurement.mp3[/podcast]
“Inch-worm, inch-worm, measuring the marigolds...”
Despite that line from a popular song, the fact is, inch-worms don’t measure anything. Neither to cockroaches, bulldogs, llamas or horned toads...because measurement is the process of counting how much of a sensory signal exists, and so far as we know, no other animals can count.
Simply counting things wouldn’t itself count for much if we couldn’t communicate, though. Through language, we’re able to tell others what we have measured, which enables us to describe things we’ve seen, contract with others for trade or exchange, and control various processes.
Just think about all the things you rely on measurement for. Your clothes were measured to fit your body. Your food is stored in a refrigerator whose temperature is ...
Posted by Edward Willett at 15:22, November 27th, 2009 under Blog, Columns, Science Columns |
Honeybees, particularly in the United States, are in decline.
In 2007-2008, 36 percent of apiaries surveyed by the Apiary Inspectors of America and the U.S. Department of Agriculture reported that some of their colonies had simply...disappeared, a phenomenon known as Colony Collapse Disorder, or CCD.
In
the most recent survey, covering September 2008 to April 2009, 26 percent of the apiaries reported that some of their colonies were lost to CCD, a lower number but still alarming: not just to beekeepers, for whom these kinds of losses are economically unsustainable, but for those of us who like to eat, because bees pollinate 80 percent of fruits and vegetables, and a much as a third of the food we consume relies on ...
Posted by Edward Willett at 12:50, September 30th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/09/The-Thrill-of-the-Chase.mp3[/podcast]
I had a hard time getting started on this column. See, as I was calling up the items I’d starred in Google Reader as possible topics, I thought it wouldn’t hurt to do a quick search for new reviews of my latest novel. And then I thought, well, as long as I’m online, maybe I’ll just skim through some blogs...and maybe check Facebook...and...
Well, you get the idea. Fact is, you’re lucky to be getting this column at all.
Which is ironic, because my jumping-off point is an article from Slate, written by Emily Yoffe, titled “
Seeking: How the brain hard-wires us to love Google, Twitter, and texting. And why that’s dangerous.”
There’s no doubt that the seeking out of information ...
Posted by Edward Willett at 16:16, September 9th, 2009 under Blog, Columns, Science Columns |
Every now and then I attend a science fiction convention, and when I do, I like to talk about it in this column, as part of my ongoing evangelical campaign to raise the profile of science fiction and win the genre new readers.
Well, I just finished a doozy of a convention, the grandaddy of them all: the 67th annual World Science Fiction Convention in Montreal, a.k.a. Anticipation.
Yes, there were people in costumes (though I only saw one Star Trek costume—an original series one, at that—and not a single Klingon). And, yes, the media tended to focus on those people. Which is fine: they’re the eye-catching ones, and they’re an important part of science fiction fandom. (And as someone who loves ...
Posted by Edward Willett at 15:39, August 12th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/06/Talk-to-the-right-ear.mp3[/podcast]
If someone approaches you from your left side and makes a request, are you more or less likely to grant that request than if he approaches you from your right side?
If you’re thinking, “What kind of a stupid question is that?”, and you think it would be an equally stupid question no matter which ear it was spoken into, then you probably haven’t heard of something called the “natural expression of hemispheric asymmetries,” and more specifically something called “the right-ear advantage.”
Basically, it boils down to this: scientists have known for a long time that humans have a preference for listening to verbal input with their right ears.
Not only that, if they hear something with both ears, they’ll pay more attention ...
Posted by Edward Willett at 12:08, June 24th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/06/Cognitive-Shortcuts-to-Obesity.mp3[/podcast]
When we think about how we make decisions, we tend to imagine that we consider the facts of a situation carefully and logically, in a straightforward, step-by-step manner.
But that process is, indeed, imaginary. The truth is that our brains prefer to do as little actual thinking as possible. They like shortcuts—and sometimes those shortcuts can get us into trouble.
Take, for instance, what psychologists at the University of Pennsylvania call "Unit Bias," which, they say, “causes people to ignore vital, obvious information in their decision-making process, points to a fundamental flaw in the modern, evolved mind, and may also play a role in the American population's 30 years of weight gain.”
The researchers conducted several studies with college-age participants. In one, the ...
Posted by Edward Willett at 20:50, June 17th, 2009 under Blog, Columns, Science Columns |
Given that the
Canadian Light Source in Saskatoon produces light a million times brighter than the sun, you might well expect to be able to see it at night even from Regina. Or, upon visiting it in winter, you might think you would find thousands of sun-starved Saskatchewanians lying all around it on beach-towels in the snow, trying to soak up a few of those extra-powerful rays.
Alas, all you will see, if you visit the Light Source, as I did this week, is an impressively large open space filled with cables pipes, and more pipes, and more cables, laid out in a large circle--or two circles, really, one inside the other.
Out of sight down in the basement an electron gun injects ...
Posted by Edward Willett at 11:44, August 17th, 2005 under Blog, Columns, Science Columns |
It’s said there are cat people, and there are dog people. Personally, I like both, but if I had to state a preference, I’d probably give the edge to cats.
It’s not very often I have an excuse to write about them in this column, but this week I do, because by some coincidence, two science items related to cat senses came to my attention within a few days of each other.
Anyone who has a cat has tales of the peculiar things it likes to eat. My childhood cat, Tiger, liked raw eggs, bits of cheese (nothing too peculiar there)—and chocolate chips.
According to a new study by geneticists, though, it wasn’t because he ...
Posted by Edward Willett at 11:38, August 3rd, 2005 under Blog, Columns, Science Columns |
There’s an old science joke that goes, “If it stinks, it’s chemistry, if it’s green and slimy, it’s biology, and if it doesn’t work, it’s physics.”
Now, however, scientists are messing with these once-sacred boundaries, as they attempt to combine living cells and computer chips to create tiny, inexpensive pollution detectors.
Many cells contain mechanisms designed to protect them from toxins. The presence of a toxin activates a “promoter gene,” which in turn activates other genes that cause the cell to begin producing proteins to help it adapt.
However, it is possible to genetically engineer cells in which the promoter gene instead activates artificially inserted “reporter genes,” which cause the cell to instead produce proteins ...
Posted by Edward Willett at 11:41, June 15th, 2004 under Blog, Columns, Science Columns |