Archive for the ‘Science’ Category

Has spring sprung?

Monday, March 17th, 2008

Last week someone at the office emailed us all stating that he’d heard and seen a crow, therefore spring had arrived in Prince Albert. We were having some warm weather, so I didn’t have the heart to argue with him. Then this morning I woke up to the weatherman informing me that the outside temperature was minus 23 C.

I emailed my co-worker informing him that his crow had died of exposure.

Someone else pointed out a piece of folklore which states that spring arrives seven snows after the first crow.

When does spring actually arrive? Having a somewhat analytical inclination, I rather like the precision of Canada’s National Research Council, which states that spring will arrive this year on March 19 at 11:48 p.m. CST (i.e. March 20 at 5:48 a.m. UTC) which apparently is the minute the sun crosses the equator from south to north, i.e. the Vernal Equinox.

However it just seems wrong to call it spring when the temperature is minus 20 C, so I’ve decided that, for me, spring will arrive when the ice breaks on the North Saskatchewan River at Prince Albert. I’m predicting that event will happen on April 12 this year (which is likely to coincide fairly closely with seven snows after the first crow).

(Does this flexible view of the true arrival of spring mean that I’m adopting a post-modern worldview?)

A sign of spring

Thursday, March 6th, 2008

It must be March because the newspapers have started the annual rite of running pictures of celebrities cuddling up to newborn seal pups.

Actress with seal pup

I don’t question actress Alison Steadman’s sincerity, but I do question the tactics of the animal-rights activists and media who knowingly mislead the public every year. Surely they must be aware of the fact that Canada has not allowed the harvest of white-coat seals in more than 20 years.

The fact is that by the time the seals have moulted, and can be legally harvested, they just don’t have the same media appeal. However the image of an attractive actress with a cute white-coated seal pup trumps scientific fact about this sustainable harvest.

Science Fair 2008

Friday, February 29th, 2008

This week Jennifer and Fiona both had entries in their school’s science fair. They and their partners put a lot of effort into their projects. Good job, and we wish you success in your future scientific endeavours.

Science Fair - Jen and partner

Science Fair - Fiona and partner

Gnostic insights on the Alberta Tar Sands

Tuesday, February 5th, 2008

Gnostic insights illuminate Alberta Tar Sands prosperity as an apparent Manipulative Extraterrestrial Virtual Reality illusion

The Alberta Tar Sands, is a great example how Canadians and humanity in general, is being manipulated by an apparent self-serving alien consciousness. This alien consciousness had been documented in great detail by the ancient Gnostics …

… for the full article in “The Canadian: Canada’s new socially progressive and cross-cultural national newspaper”, click HERE.

It’s interesting to see the Gnostics weighing in on this environmental issue, but I must admit that I’m somewhat confused. I had previously understood that the Gnostics, in the words of Scott McKnight, taught that matter (physical life on earth) was either evil or miserable or something to be endured. What really mattered was spiritual release through ’saving knowledge’ (gnosis)“. LINK. Hence their opposition to the Christian doctrine of the Incarnation … the idea of Jesus as both God and human was disgusting to them. Their environmental awareness explained in the above article is quite a contrast.

UPDATE 2008-02-06: Upon re-reading this post, I realized that people might think that I posted this because impressed with it, rather than because I found the story so bizarre. In fact I needed to read well into the article before realizing that it wasn’t a spoof of those supermarket tabloid stories about alien abductions and other products of recreational pharmaceuticals.

 

 

 

 

Praying for a cold snap … in Alberta

Tuesday, January 29th, 2008

No I don’t particularly enjoy walking to work when the temperatures are in the minus 40 Celcius range, as expected tonight. This morning was cold enough, and it was only -32C.

However part of me is relieved that a cold period seems to have settled into the western Canadian provinces. That may sound like a really masochistic thing to say, but I have a reason.

As explained in this news article, a couple of years ago hungry hordes of mountain pine beetle(MPB) crossed the Rockies from B.C. into Alberta, and have been happily munching through huge areas of lodgepole pine forest in an epidemic of biblical proportions.

Forest management agencies have been trying to deal with its spread, and forest entomologists have been studying the question of how it will fare in its new habitat. A burning question is whether the MPB will be able to survive at epidemic levels in Jack pine, an alternative to lodgepole pine, its favoured host. That is a real concern to a lot of foresters in Saskatchewan’s boreal forest, where we have lots of Jack pine but no lodgepole. There seems reason to believe that MPB might do OK in Jack pine, despite the thinner phloem layer where the insect over-winters.

Apparently what it takes to really reduce the MPB from epidemic down to endemic levels is a good old-fashioned cold snap. I’ve heard varying estimates, e.g. two weeks of -35 to -40C weather, five days of -40C weather, etc. I’ve also heard that the cold snap must occur early in the winter before the insects have become winter-hardened.

A problem is that in recent years the prairie provinces have experienced warmer than average winters, whether due to anthropogenic global warming, as many scientists believe, or other causes as suggested by the climate change sceptics. Whatever the reason, if the current cold snap lasts a few more days, it should set back the MPB epidemic, and that would be a good thing.

Of course since the MPB hasn’t yet reached Saskatchewan, it would be nice if the cold snap were restricted to Alberta and B.C. Would that be too much to ask?

UPDATE 2008-01-30: I woke up this morning to the news that a 3-year-old Saskatchewan child died of exposure and searchers are looking for her 1-year-old sister. I hope that no-one misinterprets my concerns about ecosystem health with flippancy about the serious consequences of our cold winters. Keep safe people.

Seneca Root

Monday, January 28th, 2008

I am looking forward to spending time this coming summer exploring our new land purchase. While building an inventory of forest cover types, I’ll be keeping an eye out for Seneca Root (Polygala senega).

Seneca Root in flower

I have childhood memories of time spent searching for and digging up Seneca Root. After drying the roots, we would bring them to Adilman’s General Store, where we would be paid a few cents per pound, not enough income to feel rich, but enough to buy a few treats.

Although we never picked large quantities (with the exception of my big brother Ray), I remember days when there would be a lot of boxes of Seneca Root at Adilaman’s, mostly brought in by a few serious hard-core root pickers.

Dried Seneca Root

We moved to the city when I was in my early teens, and seneca root rarely crossed my mind until many years later, when I realized that either I was looking in the wrong places or the species had become more scarce. I decided that if I had unwittingly contributed to its demise/extirpation by digging up entire rooting systems (instead of practising sustainable use by leaving part of the roots), I would atone for my transgression by planting some in suitable sites.

From the last sentence in this description on the Environment Canada webswite, it appears that the species has indeed been reduced by over-harvesting, although from other sources it isn’t considered “endangered” or even “threatened” …

A showy plant with several erect, leafy stems, each with a terminal spike of greenish-white flowers, this plant is renowned for its medicinal properties. The thick shallow root is collected and sold to this day through fur auction houses. Polygalic acid which is extracted from the dried ground root is used as an expectorant in the treatment of pneumonia, croup, and asthma. Native people have traditionally used it for respiratory ailments. It has also been found valuable in the treatment of rheumatism. This plant has been largely depleted by digging and overgrazing.

(reference)

The University of Manitoba has a good article on the species here, including a description of how to propagate it from seed or shoot cuttings. If my explorations of our land don’t find any, I may try growing some.

On the other hand, if anyone knows of a greenhouse selling Seneca Root bedding plants, please let me know.

Don’t that common sense make no sense no more?

Tuesday, November 13th, 2007

Today I received an email from a colleague which included, down in the signature line, a quote supposedly by Thomas H. Huxley, “Science is organized common sense where many a beautiful theory was killed by an ugly fact.”

I’ve been mulling over that quote on and off all day, and I couldn’t quite decide whether I agree with it or not. I place a high value on the kind of common sense that my mother had, but that old song by folkie singer-songwriter John Prine kept running through my brain

They got mesmerized
By lullabies
And limbo danced
In pairs
Please lock that door
It don’t make much sense
That common sense
Don’t make no sense
No more

Moving on from folk songs, I ran a Google search on the Huxley quote, and found an interesting opinion column in the New York Times, “In Defense of Common Sense“, by John Horgan. He mentions that Huxley made that statement in an era before Einstein, about 100 years ago, proposed a couple of theories that seem to defy common sense …

… But quantum mechanics and relativity shattered our common-sense notions about how the world works. The theories ask us to believe that an electron can exist in more than one place at the same time, and that space and time – the I-beams of reality – are not rigid but rubbery. Impossible! And yet these sense-defying propositions have withstood a century’s worth of painstaking experimental tests.

As a result, many scientists came to see common sense as an impediment to progress not only in physics but also in other fields. “What, after all, have we to show for … common sense,” the behaviorist B. F. Skinner asked, “or the insights gained through personal experience?” Elevating this outlook to the status of dogma, the British biologist Lewis Wolpert declared in his influential 1992 book “The Unnatural Nature of Science,” “I would almost contend that if something fits in with common sense it almost certainly isn’t science.” Dr. Wolpert’s view is widely shared. When I invoke common sense to defend or – more often – criticize a theory, scientists invariably roll their eyes.

The leading candidate for a unified theory (explaining quantum mechanics and general relativity) holds that reality stems from tiny strings, or loops, or membranes, or something wriggling in a hyperspace consisting of 10, or 16 or 1,000 dimensions (the number depends on the variant of the theory, or the day of the week, or the theorist’s ZIP code). A related set of “quantum gravity” theories postulates the existence of parallel universes – some perhaps mutant versions of our own, like “Bizarro world” in the old Superman comics – existing beyond the borders of our little cosmos. “Infinite Earths in Parallel Universes Really Exist,” the normally sober Scientific American once hyperventilated on its cover.

For the full article click here.

The author arrives at the conclusion that, “ultimately, scientific truth must be established on empirical grounds.”

Common sense seems to tell me that his conclusion is true.