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[podcast]http://edwardwillett.com/wp-content/uploads//2011/11/Flocking.mp3[/podcast]
It’s a familiar sight this time of year: enormous flocks of snow geese, covering a field, then all taking flight at once, whirling and swirling in unison. It’s almost like they’re all under the control of a single mind, but of course they aren’t. In fact, they’re under the control of a multitude of minds, all of them, literally, bird brains. So how do they move in synchronicity?
Despite years of study, the phenomenon, well-known though it is, has remained a puzzle to researchers. Explanations have included telepathy (no, seriously, that was a suggestion floated in the 1930s). But it appears the actual explanation is more mundane, though ...
Posted by Edward Willett at 13:59, November 3rd, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/uploads//2011/10/Alcohol-on-the.mp3[/podcast]
Human beings have been using and abusing alcohol for a very long time: roughly 10,000 years, give or take a long weekend.
The effects of drinking too much of the stuff have been known for every one of those 10,000 years (although individuals somehow seem to forget them within a remarkably short time frame).
For decades, scientists have been trying to understand the mechanism behind the reduced muscle coordination and sedative effects of alcohol. The assumption has been that alcohol acts on the brain’s neurons, but nobody could figure out exactly how.
A new study indicates that may be because they’ve been looking in the wrong place. Not only that, the ...
Posted by Edward Willett at 23:20, October 10th, 2011 under Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/07/Belly-Button-Biodiversity.mp3[/podcast]
It’s summer, that time of year when belly buttons escape their natural habitat of swimming pools and beaches and wander free in the oddest places, from the library to the shopping mall (although unlike the grins of Cheshire cats, they rarely appear without their owners).
But as you survey these navel maneuvers, don’t think of them merely as evidence that humans are viviparous. Instead, marvel at the fact that every belly button you see, as well as all those which, thankfully, you don’t, are unique habitats, rather like zoos in miniature.
We know that thanks to the efforts of a group of biologists and science communicators from North Carolina State ...
Posted by Edward Willett at 17:06, July 6th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/02/Blue-Cheese.mp3[/podcast]
I love blue cheese.
It hasn’t always been so. As a child, I was of course immersed in the done-to-death running gags of the cartoon world, where smelly cheese (always Limburger, for some reason) seemed to be thought of as a sure-fire laugh riot.
Outside of the cartoon world, I simply wasn’t exposed to blue cheese. My favorite childhood cheese was Velveeta. Maybe mild cheddar. Blue cheese? Fuggetaboudit.
But somewhere along the way I developed a taste for it, to the point where I eat it almost daily on my lunchtime sandwics. And I’m always willing to try a new blue cheese.
Now, to be fair to those long-ago cartoon creators, ...
Posted by Edward Willett at 14:49, February 4th, 2011 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2011/01/Cloning-the-Mammoth.mp3[/podcast]
One of the more striking exhibits at the Royal Saskatchewan Museum is the woolly mammoth that looms over you, emerging from a forest, when you round one of the corners in the Earth Sciences Gallery.
Twelve thousand years ago, you might have encountered exactly that scene while strolling through Saskatchewan: these days, the closest you can come is a museum exhibit, because woolly mammoths are, of course, quite extinct.
But gone forever? Perhaps not. As the hag tells Prince Caspian in the C.S. Lewis book of the same name, “You can always get them back.”
Oh, sure, she was talking about the White Witch, but she could have been talking about ...
Posted by Edward Willett at 11:44, January 19th, 2011 under Blog, Columns, Science Columns |
Time to re-roast an old chestnut, a column I wrote several years that has become fresh in my mind due to the successful completion last night of Operation Dress-the-Tree (to be followed in a few weeks, of course, by Operation Curse-the-Tree as the needle-shedding skeleton is hauled out to the alley).
Is there scientific interest to be found in ol’ Tannenbaum? Indeed there is!
Consider, for instance a Christmas tree’s incredible capacity to "drink" water. A tree may slurp up six or seven litres when you first put it up, and as much as a litre or two a day thereafter. This seems like strange behavior for something that's dead.
But of course, the tree doesn't realize that it's dead. As far as ...
Posted by Edward Willett at 14:20, December 11th, 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//2009/06/jonathan-runstadler-and-bird-flu.mp3[/podcast]
Here’s another column drawn from one of the chapters of my new book
Disease-Hunting Scientist (Enslow Publishers):
Every spring, an estimated six million birds arrive in Alaska to breed. Some spent the winter in Southeast Asia, home to a strain of avian influenza called H5N1.
Although swine flu is getting all the attention right now, bird flu hasn’t gone away: many scientists fear it could someday become more readily transmissible between humans, and produce a deadly global pandemic.
Even in its current form, it has already sickened 433 people worldwide, killing 262 of those. At the back of everyone’s mind is the 1918 pandemic that killed an estimated 50 million people, many of them healthy young adults—a pandemic caused by a ...
Posted by Edward Willett at 15:35, June 2nd, 2009 under Blog, Columns, Science Columns |
[podcast]http://edwardwillett.com/wp-content/upLoads//2009/05/laurie-richardson-and-black-band-disease.mp3[/podcast]
My newest book,
Disease-Hunting Scientist (Enslow Publishers) has now been officially released, and so this week I’m giving you a column-sized version of another of the lengthy chapters devoted to individual scientists in the book.
Dr. Laurie Richardson, Professor of Biology at Florida International University in Miami, is researching black-band disease in coral reefs—which means she spends a lot of each summer scuba-diving, often for hours a day.
At 287,231 square kilometers, coral reefs are less than a tenth of a percent of the total ocean floor. But they support more than a million species of marine life. They are also dying, from pollution, overfishing—and black-band disease, among others.
Dr. Richardson started her career researching “microbial mats,” communities of ...
Posted by Edward Willett at 11:22, May 26th, 2009 under Blog, Columns, Science Columns |
Wasps have a good memory for a faceChimps never forget a bumSince I'm more closely related to chimps than to wasps, perhaps the difficulty I have in remembering people's names simply boils down to looking at the wrong spot.
Posted by Edward Willett at 21:13, September 22nd, 2008 under Blog |