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[podcast]http://edwardwillett.com/wp-content/upLoads//2011/01/Its-Past-Your-Bedtime.mp3[/podcast]
Ah, New Year’s. A time for resolutions, typically focused on living more healthily.
Apparently the Canadian Broadcasting Corporation, not trusting us to do it ourselves, has decided to make our resolutions for us: it’s started 2011 with a series of stories lecturing Canadians on how unhealthy their lifestyle is, and started something called the “Live Right Now” initiative.
Yes, apparently determined to live up to its nickname as “The Mother Corp.,” CBC is telling us to eat our vegetables, quit watching TV and go outside and play, always wear clean underwear in case we’re hit by a truck (OK, I may have made that one up) and, most motherly of all, to “Go to bed, it’s past your bedtime!”
Apparently a CBC poll ...
Posted by Edward Willett at 13:04, January 5th, 2011 under Blog, Columns, Science Columns |
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//2010/03/Tip-of-the-Tongue.mp3[/podcast]
How often has this happened to you?
“So I was talking to...to...oh, you know, that guy, the one in the head office, big hair, bad teeth, only listens to Perry Como records...geez, why can’t I remember his name? It’s on the tip of my tongue!”
It’s a common phenomenon, and it’s not just people's names. Sometimes you can’t think of the name of a place, or a food, or a car, or...just about anything. You can feel that the information is in your head, but you can’t shape it into a word.
It may be a well-known phenomenon, but it isn’t well-understood. However, new research may have shed a little light on the mechanism involved.
One leading explanation for tip-of-the-tongue torment is that when ...
Posted by Edward Willett at 12:41, March 4th, 2010 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/11/Dreaming.mp3[/podcast]
Why do we dream?
You’d think we’d know by now. Everyone dreams, and people have been fascinated by dreams throughout recorded history. But scientifically, their origin and importance remain uncertain. Do they serve some vital psychological or physiological function? Or are they just meaningless accidents of our brain’s wiring?
A few years ago, Finnish psychologist Antti Revonsuo theorized that dreams evolved as a way to rehearse threatening situations.
Silvio Scarone of the Universita degli Studi de Milano in Milan, Italy, explains it this way: “The environment in which the human brain evolved included frequent dangerous events that posed threats to human reproduction. These would have been a serious selection pressure on ancestral human populations and would have fully activated ...
Posted by Edward Willett at 14:34, November 12th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/10/Odourprints.mp3[/podcast]
You smell.
No, I’m not being insulting. I smell, too. So does everyone else.
Unfortunately (or perhaps fortunately) human noses are not particularly sensitive, and so we only notice one another’s smells under certain circumstances, which we are all familiar with and I am therefore spared from having to enumerate.
But to those of the more advanced olfactory persuasion—yeah, I’m looking at you, Rover—not only do we smell, we each have a very particular smell: an odourprint, if you will, that distinguishes us from the crowd just like our fingerprints do.
There are a lot of researchers sniffing around the topic of odourprints right now, as Ivan Amato points out
in a lengthy article in the October 12 issue of Chemical and ...
Posted by Edward Willett at 15:57, October 14th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/07/Stretching.mp3[/podcast]
There’s a perception that science is always reversing itself. If you don’t like what science has to say about, say, the health benefits or risks of a particular food (eggs, for example, or coffee), you only have to wait awhile until a contradictory study comes out.
That’s because science progresses in fits and starts. Researchers put forward a possible explanation, a hypothesis, for the results of an experiment. Other researchers attempt to duplicate their results and refine the hypothesis. Sometimes the hypothesis is completely discarded, and a new hypothesis gains sway.
But in the media, this slow process is seldom reported. It’s much easier to pick up on the report of a single study—particularly if it has startling results—and present the hypotheses ...
Posted by Edward Willett at 12:22, July 7th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/05/blue-brain.mp3[/podcast]
Ah, the human brain. Seat of consciousness, miracle of creation or evolution (discuss amongst yourselves), able to jump to tall conclusions in a single bound, so incredibly complex that we’ll never be able to understand how it works.
Um, not so fast.
A year and a half ago, scientists at the
Blue Brain Project in Switzerland announced they had successfully created an extremely detailed—down to the molecular level—model of the neurocortical column of a two-week-old rat...and that was just Phase 1 of their ambitious research effort aimed at nothing less than reverse-engineering the mammalian brain and recreating it in a computer.
The neurocortical column (NCC) is the basic unit of the neocortex, which in mammals is responsible for higher brain functions ...
Posted by Edward Willett at 12:13, May 5th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/04/photic-sneezing.mp3[/podcast]
“Sunshine on my shoulders makes me happy,” the late John Denver sang. “Sunlight in my eyes can make me cry.”
Lovely lyrics. But as a kid, I thought it would have made more sense for Denver to sing, “Sunlight in my eyes can make me sneeze.” Because for somewhere between one in 10 and one in three people, sunlight has exactly that effect.
It’s called “photic sneezing,” and it’s nothing new: Aristotle wondered about it in the 4th century BC (although he thought it was brought on by heat, not light). But millennia later, we still don’t know exactly why it happens, as New Scientist writer Richard Webb
recently discovered.
The usual explanation for regular sneezing is that it serves to ...
Posted by Edward Willett at 15:05, April 28th, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/uploads/2009/04/gray-hair.mp3[/podcast]
Look, I hate to be the one to break it to you, but you’re growing older. Every second. Even worse, so am I.
There are many manifestations of the aging process, most of which are far too depressing to go into, especially on a morning in late February. Still, we must all face facts sooner or later, and for many of us, the “sooner” arrives when we look in a mirror and notice...a gray hair.
It’s the advance scout of an army of pale invaders to our scalp, and it’s been the focus of speculation and research for a long, long time.
Now a new paper has been published that claims to have solved the mystery of why we go gray. The culprit, ...
Posted by Edward Willett at 14:54, February 23rd, 2009 under Blog, Columns, Science Columns |
With Valentine’s Day looming at the end of this week (well, looming for those who have not yet given sufficient thought to cards, flowers and chocolates--I’m looking at you, fellow members of my gender), it seems a good time to revisit the science of kissing.And just in time for Valentine’s, new research on the topic is being reported at the annual conference of the American Association for the Advancement of Science this week in Chicago.Before we get to that, a quick refresher on why we engage in a practice which involves the exchange of, by one estimate, 278 colonies of bacteria per osculation.One theory is that kissing may have evolved as a means of ...
Posted by Edward Willett at 17:59, February 9th, 2009 under Science Columns |