Category Archives: Entertainment

Slow Posting

I have a few urgent work deliverables, plus taxes, and haven’t had a chance to finish a blog post.

Even animals are disappointed in me (via Kamal Patel):

This sloth kind of feels like you should update your blog more frequently.

This baby bear is frankly shocked that you missed that deadline. Shocked.

At least I can always count on the Corgi!

Theory of the Stork: New Evidence

Two different theories exist concerning the origin of children: the Theory of Sexual Reproduction (ThoSR) and the Theory of the Stork (ThoS)….

Nowadays, many people believe in the theory of reproduction, simply because they have been taught this theory in school … A number of the world’s leading scientists are still in favour of ThoS. Some recent scientific work (1997–2001) has shown new evidence for ThoS.

So begins a (fairly) recent paper by Thomas Höfer, Hildegard Przyrembel, and Silvia Verleger in the journal Paediatric and Perinatal Epidemiology. [1]

I confess that I have long been skeptical of the Theory of the Stork, based on the ability of the Inuit to survive with a very small local stork population. It seems clear to me that storks are not absolutely necessary for delivery of children, at least in a Paleolithic culture eating a marine-rich diet.

Yet, I admit to being over-skeptical at times. Due to this personality quirk I have entirely missed out on the widely reported benefits of orange juice [2], aspirin [3], eggshells [4], 8-to-12-egg breakfasts [5], ice baths [6], and intentional overeating [7].

As a scientist, I feel obliged to follow the evidence wherever it leads. So let’s look at this new evidence for the Theory of the Stork.

Correlation of births with storks

It’s long been known that human birth rates are correlated with the local stork population. This is true longitudinally (over time) as well as latitudinally (distance from the equator). The latitudinal evidence is too obvious to show, it is why Arctic and Antarctic populations of both storks and humans are so small, but the longitudinal evidence may surprise many.

Here are representative longitudinal data from Lower Saxony, Germany:

The strength and weakness of the data are apparent. The correlation is clear, yet the correlation does not quite reach statistical significance. It seems the number of children per stork fluctuates from year to year.

What new evidence have Höfer et al generated? It is an insight so startling in its simplicity that it’s a wonder no one thought of it earlier. They noticed that the introduction of air-conditioning and central heating, resulting in the closing of windows at hospitals, decreased the correlation of births with storks. In their words:

It is a well-known fact that storks are never seen in hospitals, but scientists have disregarded this simple truth in their studies. [1]

They therefore reproduced the epidemiological studies, this time using only out-of-hospital deliveries. The correlation with local stork population is much improved. Here is the data for Brandenburg, Germany, the state that contains Berlin:

On the left is the correlation of total deliveries with stork population. The correlation is quite poor; perhaps Berlin hospitals are particularly forbidding to storks. On the right is the correlation of out-of-hospital deliveries with stork population. The correlation is much, much stronger.

Höfer et al conclude:

Medical interventions may be able to replace the stork. They are particularly necessary in hospitals where storks do not come. Our study clearly shows that ThoS has to be restricted to out-of-hospital deliveries. [1]

The implication is clear: if you want your baby to be delivered in the traditional way, by stork, do not enter a hospital.


It looks like obstetrical science is heading toward a hybrid theory, in which both medical deliveries in hospitals and stork deliveries contribute to the human birthrate.

To conclusively resolve remaining conflicts between the Theory of Sexual Reproduction and the Theory of the Stork, randomized clinical trials will be required.

The obvious design would be to randomize two sets of couples. The intervention group would reside on a stork farm, while the control group would reside on a chicken farm. Extra-long artificial beaks would have to be fitted to the chickens to make the subjects “blind” to their group. The technology already exists to conduct such a trial. Here is an intervention group animal:

And a control animal being fitted with artificial beak:

But funding agencies will never step forward with the millions of dollars required for such a trial as long as Big Hospital controls obstetrical research. For the foreseeable future we will be limited to epidemiological evidence.

I personally find the new epidemiological evidence in favor of the Theory of the Stork quite as compelling as the epidemiological evidence against red meat and white rice. However, until clinical trials have been performed, I think it is prudent for pregnant women to continue to utilize medical delivery services, and to rely upon storks only in emergencies.


[1] Höfer T et al. New evidence for the theory of the stork. Paediatr Perinat Epidemiol. 2004 Jan;18(1):88-92.

Hunter-Gatherer Photos

We went to Cape Cod this weekend. In lieu of a food post, I’ll share a few photos.

The water at Ridgevale Beach in Chatham, Massachusetts was a very swimmable 70ºF (21ºC), but hardly anyone else was swimming:

I don’t know why. Too cool? Threat of rain? Rampant hypothyroidism? (UPDATE: Fear of sharks?)

We did meet up with a few native hunter-gatherers. Here is a Least Tern fishing for the benefit of his nesting mate:

Here is a seagull who caught a crab:

And a Piping Plover:

No, I didn’t measure their serum cholesterol.

Happy Fourth of July everyone!

Happy Father’s Day; and Pictures From Our Vacation

Happy Father’s Day! Our best wishes to all Dads.

I’ll be spending part of today on Cary Nosler’s radio show this afternoon from 3-4 eastern time (12-1 Pacific) and you can listen on the Internet by clicking the “Listen Live” button at the top of his page. The interview will also be archived online and I’ll post a link when that is available.

Since it’s a day of relaxation, we thought we’d share photos from our vacation.

The primary motivation for this trip was to help the oldest of our wards, Samantha, move to Savannah, Georgia. Along the way we spent a few hours at beaches in Rehoboth Beach, Delaware; Ocean City, Maryland; Chincoteague Island, Virginia; Virginia Beach, Virginia; Wilmington, North Carolina; Myrtle Beach, South Carolina; and Tybee Island, Savannah, Georgia. We also spent a few days touring Chincoteague Island, Virginia and Savannah.

Here is a sampling of pictures.

Most of the beach towns looked similar. Here is a view of Myrtle Beach:

Savannah has a beautiful cathedral:

At the mass we attended an Irish priest told stories from his childhood: of “Montana Fitz,” a rare Irishman who had returned from the US, who told the children that the skyscrapers of New York were so high they had to cut out floors to let the moon pass through; and of being banned from the cinema for 6 months after he kidnapped a goat and smuggled it into the theater, raising havoc mid-show.

Here is a picture of me on River Street in Savannah, our nephew Hong is on the right:

Here is the oak drive into Wormsloe, an estate established by one of the original settlers of Georgia – and Paul and Shou-Ching:

Wormsloe had some salamanders which were good at blending into the background:

A Georgia crab:

Here is Tybee Island, Georgia:

A self-photograph:

A stingray caught by a fisherman at Sea Gull Pier on the Chesapeake Bay Bridge.

He was thrown back:

A salt marsh on the eastern shore of Virginia:

Some ducks:

On Chincoteague Island, a seabird eating our nuts:

An egret caught a fish:

A turtle:

Chincoteague Island is full of egrets:

One of these birds is having a bad hair day:

This one caught an eel:

I’m not sure what these birds are:

It’s also full of blue crabs.

We generally stay in efficiency suites so we have the option of cooking, and it paid off here as we spent an hour and a half crabbing and had a nice crab dinner.

I’m not sure if crabbing is hunting or gathering, but it sure is easy. We caught thirty 5” or larger blue crabs in an hour and a half and could easily have caught a hundred.

We also caught a pair of mating horseshoe crabs:

They walked off together:

Of course, Chincoteague is known for its wild ponies. They’re not always so wild:

Here they are grazing on marsh grasses:

Finally, sunset: