Build-a-Prairie: Online game for geography, history, biology

September 9, 2007

Build-a-prairie logo from University of Minnesota

The University of Minnesota distance learning site has a game students can play to create the ecosystems for a successful prairie.

The prairie is one of North America’s great ecosystems and a vital habitat for many plants and animals. Over 98% of the prairie has been lost in the past 150 years—but some people are trying to bring it back, hectare by hectare. Restoring a prairie is a great challenge, requiring knowledge of biology, ecology, climatology, and even economics.

Are you up for the challenge? If you choose the right plants and animals, you can watch the prairie come to life before your eyes! Let’s begin!

North America’s prairie is divided into the tallgrass ecosystem and shortgrass ecosystem (plus an area in between—the “mixed grass” prairie). Which one do you want to restore?

This game fits neatly into geography curricula for a number of states, and also covers parts of the 7th grade social studies standards for Texas — if your state is covered by the tallgrass or shortgrass prairies as shown on the accompanying map, it’s likely your state standards include students’ learning about prairie ecosystems.

North American tallgrass and shortgrass prairies, U of Minnesota The game is fail-safe; it does not allow incorrect selections. It’s not a sim, really, but a basic introduction to what makes a successful prairie. Students should be able to master the game in 15 minutes.

Though developed way up north in Minnesota, the game and species are close to Texas prairies, too. The emphasis on soil points to some of the key errors made by farmers (encouraged by developers and the U.S. Department of Agriculture) which led to the Dust Bowl; this is a good enrichment exercise for Dust Bowl lesson plans.  These games cover many of the requirements for Boy Scout merit badges, too:  Environmental Science, Wildlife Management, and Soil and Water Conservation, and others.

This game comes out of the Bell Museum at the University of Minnesota; be sure to check out the Watershed game, too.

Watershed Game logo, Bell Museum, University of Minnesota

Update, October 2011:  No, I can’t find the game now, either.  It appears the Bell Museum took the site down, and trusting (and hoping) they wouldn’t do that, I didn’t pirate any of the images, nor especially the game.

Here’s hoping someone will put the thing back on line, somewhere.  If you find it, will you let me know?  I’d like to renew the links.  Several school systems went through this site to get to the game for classroom activities.  It was a good thing.

Update October 30, 2011:  Try the game here.


Tipping point: Greenland ice melt shakes Earth

September 8, 2007

Stephen Leahy’s headline sounds almost hysterical: “Greenland Ice Collapse Producing Earthquakes.”

Here’s the article in The Guardian with the backup data.

Something to think about.

Greenland is melting; photo showing ice sheets breaking up

Read the rest of this entry »


Blog for the environment: Blog Action Day, October 15

September 8, 2007

Blog Action Day, October 15: Organizers hope to have as many as 10,000 blogs writing about environmental issues and environmental action.

Blog Action Day 2007, the environment

If you blog, perhaps you could join in. If you read and comment only, feel free to urge others to join in.

It’s headed up by a bunch from downunder. U.S., Canadian and Mexican bloggers haven’t got on the bandwagon a lot, yet. As the organizers describe it:

On October 15th – Blog Action Day, bloggers around the web will unite to put a single important issue on everyone’s mind.

In its inaugural year, Blog Action Day will be co-ordinating bloggers to tackle the issue of the environment.

What Each Blogger Will Do

Bloggers can participate on Blog Action Day in one of two ways:

  1. Publish a post on their blog which relates to an issue of their own choice pertaining to the environment.For example: A blog about money might write about how to save around the home by using environmentally friendly ideas. Similarly a blog about politics might examine what weight environmental policy holds in the political arena.Posts do not need to have any specific agenda, they simply need to relate to the larger issue in whatever way suits the blogger and readership. Our aim is not to promote one particular viewpoint, only to push the issue to the table for discussion.
  2. Commit to donating their day’s advertising earnings to an environmental charity of their choice. There is a list of “official” Blog Action Day charities on the site, however bloggers are also free to choose an alternate environmental charity to donate to if they wish.

And that’s it.

A gentle nudge to a better planet. Seems like a good idea to me.

Tip of the old scrub brush to Meeyauw.


Unstrange maps: Security, health, economics

September 3, 2007

Strange Maps features odd maps, often fictional. I like the site, especially for the inherent humor in some of the maps — and since it’s such a popular site among the more than 1 million WordPress weblogs, it’s clear others share my enthusiasm.

Global map of energy security risk - Maplecroft Maps

There are a lot of unstrange and beautiful maps based on reality, too, used to give a quick, graphic image to the brains of people working on serious problems. Maps guide policy makers, and illustrate geographical range of problems, and sometimes geographical causes and vulnerabilities.

Here’s a source of interactive maps that every economics, government, history, and health teacher should bookmark: Maplecroft Maps.

Maps at this site cover a nearly complete range of issues that worry leaders of businesses and nations. I found the site looking for information about malaria.

Of special note is the wealth of information available from the interactive features. Clicking on nations or on symbols on the map provides details of issues the map covers; three tabs with the maps take the viewer of most of the maps to an extensive list of resources on the issue, and case studies, and analysis. These sources seem tailor made to help students doing geography projects.

Issue maps include disasters, malaria, child labor, climate change, poverty, land mine risk, political risk and a wide variety of others. You’ll need Macromedia Flash on your computer; there does not appear to be any way to download the maps, so you’ll need a live internet link to use these in class.

Information from these maps will be more current than any geography, history or economics book. Go see.

Maplecroft is a network of academic and business consultants. These maps are made to help their clients; Maplecroft’s description of the series is below the fold.

Read the rest of this entry »


Slave narratives in Flash animation

August 31, 2007

Wow!

Graphic for Slave Narratives on-line exhibit

Teachers, take a look at this Flash animation about slavery, from the Museum of African Diaspora (MoAD) in San Francisco. Yes, that beautiful, distinctive narrator voice is Maya Angelou — this is a high quality, high-impact presentation.

This MoAD piece, “Slave Narratives,” gives a glimpse of the potential of on-line learning, and what can be done with computers to supercharge a subject. Here slavery is presented as not only a colonial American problem, but is instead carried on through salvery issues in the 21st century. It’s part of the MoAD “Salon,” a site that world geography, world history and U.S. history teachers need to visit right away.

Cyberspace Nova discusses the site in a quick review of recent great Flash animations:

Imagine how it looked like taking a people freedom, torturing them, killing them and moving them far far away from their home. Tears can follow very easily if you just put one picture on your mind how it looked like. Yet, Slave Narrative put thousands of pictures in front of your eyes if you listen to the stories of slaves who lived to write them and share with people that will live after them. Let’s never forget this, because it’s happening today, like some stories from Slave Narratives tell… I love that this site is done in Flash, it is so powerful, it tells a story that we cannot hear a lot… Narrative part not just only justifies use of Flash, whole interactivity makes it great. 5/5

Opening to Photographs from the African Diaspora exhibit

Also look at this photographic exhibit of from MoAD, featuring more than 2,000 photos of people of African descent and places and things important to them — again, with great flash animation.

Bookmark the home page of the museum while you’re there.


Great Wall of China crumbling

August 29, 2007

Nothing lasts forever.

From MSNBC comes an Associated Press report that the Great Wall of China is falling down in places, the victim of blowing sands. The blowing sands are the result of a Dust-Bowl-like overplowing spree after World War II.

Crumbling section of Great Wall of China, in Mongolia

Observations:

1. Geography teachers should copy this story and follow it; soil erosion killed Babylon and several other civilizations in the Fertile Crescent (and Carthage, if we allow that the erosion was promoted by the Romans as a weapon of genocide); the Great Wall is one of those features that most people think strong an permanent. This is also a great insight into construction methods — the parts of the Wall that are crumbling appear to have been made of mud. Adobe construction, anyone (someday I have to finish that post).

2. World history teachers ought to note it for the same reasons as geography teachers. U.S. history teachers will want to keep this to compare it to the Dust BowlThere are also signs that humans may have significantly altered the local biota and, perhaps, climate, with their construction and agriculture methods.

3. China’s ascent in world position brings responsibilities it may have hoped to avoid, such as protecting the environment. Ending the encroachment of the desert in this case is a tall order — but if it can be done there, perhaps it can also be done around the Sahara, around the Namib, around the Syrian Desert, and other places where grasses once grew, but dust now blows. These sites are more common than one might think.

4. Santayana’s ghost: Didn’t China pay attention to the events of the U.S. Dust Bowl?

Tip of the old scrub brush to Jonathan Turley’s new blog — Turley’s a good lawyer with very interesting cases; his views are a welcome addition. Most of his blog simply points to interesting legal issues.


How to fight malaria – Kenya’s example

August 17, 2007

Kenya has cut malaria by nearly half. Without further comment from me, here’s the news story from Gulf Times, Doha, Qatar, and below that, from a few other sources:

Kenya nearly halves child deaths from malaria

Published: Friday, 17 August, 2007, 01:27 AM Doha Time

NAIROBI: Kenya announced yesterday that it almost halved malaria deaths among small children by using insecticidal nets (INTs), spurring the World Health Organisation (WHO) to advocate free nets for all as it tackles Africa’s deadliest disease.

Health Minister Charity Ngilu said distribution of 13.4mn INTs over the past five years among children and pregnant women had helped curtail infections, a key success against a disease threatening 40% of the world’s population.

“Childhood deaths have been reduced by 44% in high-risk districts, in-patient malaria cases and deaths are falling (and) there are reduced cases at the community level,” she said in a statement.

“For every 1,000 treated nets used, seven children who might have died of malaria are saved.”

Malaria kills 34,000 children under the age of five each year in Kenya, and threatens the lives of more than 25mn of its population of 34mn people, the ministry said.

Children sleeping under INTs in malaria risk areas are 44% less likely to die than those who are not, according to a survey carried out in four districts representing the country’s epidemiological pattern.

The government has distributed 12mn doses of artemisinin-based therapy (ACT), the latest surefire anti-malaria drug cocktail to replace the mono-therapies that had developed resistance.

In addition, some 824,600 houses in 16 epidemic-prone districts underwent indoor spraying this year.
The government and donors spent 4.7bn shillings ($70.2mn) for the campaign, yet the funds were not enough.

Ngilu said the government would freely provide 2mn treated nets annually to ward off mosquitoes at night when they are active, calling on donors to boost the blanket distribution.

“The impact we have seen and the lessons we have learnt through massively distributing INTs, rather than selectively marketing and selling them, will not only benefit Kenya’s children but all Africa’s children,” she said.

In a statement, the WHO said it had abandoned its earlier guideline of targeting only vulnerable groups – under fives and pregnant women – in favour of “making their protection immediate while achieving full coverage”.

“Recent studies have shown that by expanding the use of these nets to all people in targeted areas, increased coverage and enhanced protection can be achieved while protecting all community members.”

WHO chief Margaret Chan said that Kenya’s success “serves as a model that should be replicated throughout ‘malarious’ countries in Africa.”

“This data from Kenya ends the debate about how to deliver the long-lasting nets. No longer should the safety or well-being of your family be based upon whether you are rich or poor,” said WHO’s Global Malaria Programme director Arata Kochi.

Chan and Kochi were deriding the “social marketing” model widely backed by donors of distributing INTs by selling them at subsidised rates, even to vulnerable groups, and raising awareness of their importance.

Although supporting anti-malaria campaigns, public health watchers have chided British and US foreign development agencies for pushing for social marketing in the world’s poorest continent.

The WHO launched a global programme in 1955 to eradicate the disease that has frustrated attempts to create a vaccine owing to its constant mutations.

Using dichloro-diphenyl-trichloroethane (DDT), a powerful insecticide, and the drug chroloquine, the organisation managed to eradicated the disease in the West by the 1960s.

But the programme never got off the ground in the humid and low-lying tropics in sub-Saharan Africa where the disease persisted.

By 1969, the programme collapsed as financing withered in the face of rising poverty, political upheavals and surging opposition to DDT for misuse, not by anti-malaria campaigners, but farmers.

But Kochi said the Stockholm Convention on Persistent Organic Pollutants allowed the use of DDT in endemic countries for “public health only” and Uganda and Malawi were the only African nations keen on the chemical.

Malaria affects more than 1bn people worldwide and kills 1mn – mainly under age five – every year, the vast majority in sub-Saharan Africa. – AFP (Agence France Press) Read the rest of this entry »


Toldja

August 8, 2007

Remember the earlier post on this?

Flight patters, from Aaron Koblin Design|Media Arts

Robert Krulwich at ABC thought it was neat, too — see this video, and you can see the artist who created the maps. Does this mean there will be more?


Saving Texas’s only natural lake

August 3, 2007

Aptly named, Salvinia molesta threatens to choke Caddo Lake to death. As Caddo Lake is the only natural lake in Texas, and a site of outstanding beauty and great natural treasure, the friends of Caddo Lake are fighting back.

Spraying Salvinia molesta on Caddo Lake - NY Times photo by Michael Stravato

The New York Times features a lengthy story on the lake and the fight to save it in this week’s Science section (July 31, 2007 – Science is part of the Times every Tuesday).

Every Texas social studies teacher should know Caddo Lake and its stories as well as anything else. It’s the stuff memorable classes are made of.

1. It’s the only “natural” lake in Texas, though it is formed by a dam. The “only honest lake in Texas,” in the local lingo. The original lake was formed by a monumental log jam on the Red River, probably trees blown down by a massive hurricane several hundred years ago.

2. Caddo Lake is named after the Caddo Tribe, the tribe whose word for friend, “tejas,” gave the state its name. (See my earlier post on Caddoland.)

3. Caddo Lake straddles what was once “no man’s land,” or the Neutral Territory, a buffer zone between English/French, then American, and Spanish, then Mexican settlements. It was a haven for criminals, scalawags, filibusterers and revolutionaries. The area plays a large role in the decades of fighting to steal Texas from the Spain, and later from Mexico. Texas history is much better understood when one knows the lake.

4. Caddo Lake once was the means to make Jefferson, Texas, a port city. Until Col. Shreveport dynamited the logjam that made the lake in 1873, Jefferson was a bustling center of commerce. Today Jefferson boasts some wonderfully preserved historic remnants of that era, many converted to bed and breakfast inns, a great weekend getaway. Fishing is good, photography is great.

5. Ladybird Johnson was born nearby, and her family still lives in the area.

6. The Hughes Tool Company had its beginnings on Caddo Lake, where Howard Hughes, Sr., tested his drill bit, “the rock eater,” designed to cut through mud and rock to where the oil was; this is the home of the fortune that Howard Hughes, Jr., inherited, to build to one of the greatest fortunes in the world. That the younger Hughes was a rake, a mechanical genius, an air pioneer, daring movie producer, and weird as hell only makes the story better. Hughes named his movie production company after the lake, Caddo Productions.

6. Contrary to most of Texas’s political leanings, local people around Caddo Lake have rallied to efforts to protect the lake and conserve its rare beauty. The area is designated for protection as a Ramsar Treaty critical wetlands site — a designation that most conservative Texans ridicule and fear (at one point the Texas Republican Party platform opposed conservation easements to protect the lake bizarre). Latter-day Caddoans welcome the designation, and when we toured the area they sang the praises of Don Henley, the rock and roll musician who is aiding their efforts to save the lake. It’s an odd combination for any political work — uniquely Texas. (Here’s your chance to play the Eagles for your classes, teachers!)

7. When it comes to Texas botany, zoology, and biology in general, Caddo Lake provides the local angle for water quality, water shortages (one proposal is to steal water from the lake for Texas cities far away), wildlife management, and of course, the invasion of exotic species.

8. Everything about this area screams Texas quirkiness. Uncertain, Texas? An often-told story (accurate?) is that when the town applied for a post office, there was a dispute about what to call the town. The fellow who filled out the application wrote “uncertain” in the blank for the town’s name — and that’s how the U.S. Postal Service approved it. Another story holds that the name “Uncertain Landing” caught on because the landing was treacherous mooring for boats. You got a better story about your town’s name? I doubt it.

Save the article from the Times, teachers! You’ll be glad you have it later this year.

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Tracking hurricanes for classrooms

July 31, 2007

This image of Tropical Storm Chantal depicts wind speed in color and wind direction with small barbs. White barbs point to areas of heavy rain. The highest wind speeds, are shown in purple. The data were obtained by NASA’s QuikSCAT satellite on August 1, 2007, as it was just south of Newfoundland, Canada. NASA image

This image of Tropical Storm Chantal depicts wind speed in color and wind direction with small barbs. White barbs point to areas of heavy rain. The highest wind speeds, are shown in purple. The data were obtained by NASA’s QuikSCAT satellite on August 1, 2007, as it was just south of Newfoundland, Canada. NASA image

Here in North Texas, most of our classrooms see refugees from coastal storms from time to time — in fact, most schools still have refugees from Hurricane Katrina, or Hurricane Rita. Plus, sitting close to Tornado Alley, everyone understands that weather is no abstraction here. Weather is personal.

Maps of weather offer teachers a good way to make geography personal, too — or at least more relevant. Those little clouds swirling west from the coast of Africa today could be the hurricane that swamps the Texas coast in a couple of weeks.

An e-mail correspondent sent a link to the Weather Channel’s Hurricane Central, suggesting I might want to track storms for my personal safety (Tropical Storm Chantal is far off in the Atlantic, and racing away; no problems from that storm).

Why not have kids track storms in class? The map above, for example, should be a basic foundation for much of Texas history (the explorers and Spanish colonization, for example), for U.S. history (explorers and the slave trade, the Triangle Trade, the Battle of the Atlantic in World War II, and so on). Get students used to using maps to track important and interesting things, and map use will become second nature, as it should be. The Weather Channel and other sources create updates on that basic map several times a day.

What sorts of storms did the explorers face? The slave ships? How big was the storm that shipwrecked Esteban in Texas? What is one likely source of the massive forest blowdown that created the greater Caddo Lake?

Hurricane season runs through October. There should be a lot of grist for the learning mill just in the daily weather reports. You might also use the weather maps in the daily newspaper (most local newspapers will give you a classroom set for a week for under $20.00 under the Newspapers in Education (NIE) project) (NIE offers an interactive quiz on geography weekly, by the way).

Is there any kid who isn’t fascinated by the weather? That’s your hook. Maps are freely available from the Weather Channel site, and from dozens of others.

Caption from NASA: The third tropical depression of the Atlantic hurricane season formed around 11:00 p.m. EDT on Monday, July 30 west of Bermuda. Exactly 12 hours later on Tuesday, July 31, at 11:00 a.m. EDT, the storm strengthened into a tropical storm with sustained winds of 40 mph and higher gusts. At that time, the storm was named Tropical Storm Chantal. Chantal was located near latitude 40.2 north and longitude 62.7 west, about 330 miles (530 km) south of Halifax, Nova Scotia and is moving rapidly toward the northeast near 23 mph (37 km/hr). Chantal is not a threat to the United States.

Caption from NASA: The third tropical depression of the Atlantic hurricane season formed around 11:00 p.m. EDT on Monday, July 30 west of Bermuda. Exactly 12 hours later on Tuesday, July 31, at 11:00 a.m. EDT, the storm strengthened into a tropical storm with sustained winds of 40 mph and higher gusts. At that time, the storm was named Tropical Storm Chantal. Chantal was located near latitude 40.2 north and longitude 62.7 west, about 330 miles (530 km) south of Halifax, Nova Scotia and is moving rapidly toward the northeast near 23 mph (37 km/hr). Chantal is not a threat to the United States.

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Collateral damage from magic bullets

July 22, 2007

In an earlier post I noted Norman Borlaug’s receiving the Congressional Gold Medal. In comments, Bernarda noted those who disagree with the claim that Borlaug’s Green Revolution was much of a benefit, or perhaps more accurately, those who note the problems that result from such advances — and there are many. Bernarda pointed to a BBC lecture from Vendana Shiva, detailing the problems that Punjab experienced as a result of governmental and society structures unable to deal with the changes required by high-yield crops: “Poverty and Globalisation.” It’s worth a read or a listen.
Similarly, in another BBC lecture in that series, Gro Harlem Bruntland details problems from “progress” that includes cutting the forests, in “Health and Population.” Relevant to other discussions here, she notes a rise in malaria due to deforestation, raising an issue that the junk science purveyors opposed to Rachel Carson’s honoring would like to ignore. Here is a small excerpt of her talk — note that deforestation is not a problem that more DDT can solve:

Gro Harlem Bruntland:  Recently, in Mozambique, I saw children with their eyes glazed with fever from a malaria that could have been prevented if their parents could afford bed nets. Deforestation had changed malaria from a nuisance to a curse in a matter of twenty years. 

Gro Harlem Brundtland, former Director General of the World Health Organization (WHO). Wikiquote image.

Gro Harlem Brundtland, former Director General of the World Health Organization (WHO). Wikiquote image.

More people are suffering from this killing and debilitating disease now than ever before, and deforestation, climate change and breakdowns in health services have caused the disease to spread to new areas and areas that have been malaria-free for decades, like in Europe.

In the Philippines, I have watched how beggars sit exhausted on the pavements convulsed with coughing. Tuberculosis, which we long believed had been brought under control by effective treatment, is on the rise again. Increasingly, we see forms of tuberculosis which are resistant to all but a very expensive cocktail of drugs.

I think that HIV/AIDS may be the most serious threat to face sub-Saharan Africa and other developing regions. space. Already, the AIDS epidemic is the leading cause of death in several African countries. AIDS has reversed the increases in life expectancy we have seen over the past thirty years. The social and economic devastation in countries that could lose a fifth of their productive populations is heart-rending.

I believe we are facing this alarming situation largely because of an outdated approach to development. Our theories have to catch up with what our ears and eyes are telling us – and fast.

There was a period in development thinking – not so long ago – when spending on public services, such as health and education, would have to wait. Good health was a luxury, only to be achieved when countries had developed a particular level of physical infrastructure and established a certain economic strength. The implicit assumption was that health was to do with consumption. Experience and research over the past few years have shown that such thinking was at best simplistic, and at worst plainly wrong.

I maintain that if people’s health improves, they make a real contribution to their nation’s prosperity. In my judgement, good health is not only an important concern for individuals, it plays a central role in achieving sustainable economic growth and an effective use of resources.

As in Europe at the end of the 19th and beginning of the 20th century, we have seen that developing countries which invest relatively more, and well, on health are likely to achieve higher economic growth.

In other words, malaria prevention grows on trees, or malaria grows with the cutting of trees.


Not reading for comprehension: Glenn Reynolds, National Geographic and DDT

July 17, 2007

It’s best to avoid the tabloids most of the time, but particularly its good not to rely on tabloids for good information for making policy.

Glenn Reynolds at Instapundit, often an internet tabloid, demonstrates these dangers, especially with regard to the hoax campaign against Rachel Carson and the World Health Organization.

In a post today, Instapundit said:

A REPORT ON MALARIA, from National Geographic.

And note this bit:

Soon after the program collapsed, mosquito control lost access to its crucial tool, DDT. The problem was overuse—not by malaria fighters but by farmers, especially cotton growers, trying to protect their crops. The spray was so cheap that many times the necessary doses were sometimes applied. The insecticide accumulated in the soil and tainted watercourses. Though nontoxic to humans, DDT harmed peregrine falcons, sea lions, and salmon. In 1962 Rachel Carson published Silent Spring, documenting this abuse and painting so damning a picture that the chemical was eventually outlawed by most of the world for agricultural use. Exceptions were made for malaria control, but DDT became nearly impossible to procure. “The ban on DDT,” says Gwadz of the National Institutes of Health, “may have killed 20 million children.”

Read the whole thing. [Emphasis from Instapundit.]

“Malaria: Stopping a Global Killer,” cover of National Geographic Magazine, July 2007. Test to see if your reading comprehension is better than Instapundit’s Glenn Reynolds!

Please do read the whole thing — what is emphasized is not what the brief snippet at Instapundit says at all. The National Geographic article, “Bedlam in the Blood,” gives details of the fight against malaria, including details about how difficult it is to beat. Among other things, the article talks about the medical difficulties and the political difficulties. The article emphasizes that there is not a panacea solution, including especially DDT.

But, that paragraph Reynolds quotes already carries that message. Did you miss it? Reynolds appears to have missed it big time. Here’s the paragraph again, with my emphasis for what you should understand about the difficulties

Soon after the program collapsed, mosquito control lost access to its crucial tool, DDT. The problem was overuse—not by malaria fighters but by farmers, especially cotton growers, trying to protect their crops. The spray was so cheap that many times the necessary doses were sometimes applied. The insecticide accumulated in the soil and tainted watercourses. Though nontoxic to humans, DDT harmed peregrine falcons, sea lions, and salmon, [especially predators of mosquitoes]. In 1962 Rachel Carson published Silent Spring, documenting this abuse and painting so damning a picture that the chemical was eventually outlawed by most of the world for agricultural use [years later]. Exceptions were made for malaria control, but DDT became nearly impossible to procure. “The ban on DDT,” says Gwadz of the National Institutes of Health, “may have killed 20 million children.”

In the critical area of Subsaharan Africa, governments were unable to put together programs to spray for mosquitoes and deliver pharmaceuticals to victims. Although DDT was largely ineffective against the mosquitoes that carried some forms of the disease in that area, the human institutions simply did not exist to make an eradication program work.

Instapundit puts the blame on Rachel Carson, as if the later restrictions on DDT were what she urged, and as if Carson could personally have saved the Belgian Congo, Rwanda, Rhodesia/Zimbabwe and other nations from revolutions that crippled governmental efficacy throughout Africa.

Read the entire article. Malaria eradication in the U.S. was made easier by the fact that the mosquitoes that carry the disease here tend to eschew humans for meals — they bite cattle instead (who have their own forms of malaria). The U.S. had money to put screens on windows, a medical establishment to treat malaria, and the less aggressive form of the malaria parasites.

Subsaharan Africa had none of those advantages. Reynolds suggests, and the Competitive Enterprise Institute says, all of that was Rachel Carson’s fault.

The power of a bad, wrong idea should not be underestimated. Malaria cannot be conquered today without a combination of better medical care, education, strong governmental agencies to carry out government malaria-fighting programs, and consistent work to prevent evolution of malaria parasites into tougher diseases, or malaria-carrying mosquitoes into pesticide-resistant weapons of disease dissemination.

If Reynolds were to actually read Silent Spring, he’d begin to understand the enormity of the problems, and he could become a tool to stop the spread of malaria, instead of a voice unwittingly calling for surrender.

DDT is not a panacea against malaria now. Insects are resistant, the parasites are resistant to medical treatment (and DDT never played a key role in that process), money is scarce for creating and distributing effective blocks to malaria infections, and political institutions to fight the disease are wobbly. None of that is Rachel Carson’s fault. Much of that information was carried in the warnings from Rachel Carson.

But, if you read the article, you understand that DDT never could have been effective against some of the worst forms of malaria. DDT was never a panacea against malaria.

You won’t learn that from tabloid journalism, which offers solutions to difficult problems which are, as Ronald Reagan described them, simple and easy, but also ineffective and wrong. Instapundit misleads with such reports.

Read the rest of this entry »


Quote of the moment: Immigration and economic growth

July 15, 2007

Immigrants’ Contribution to Economic Growth
“The pace of recent U.S. economic growth would have been impossible without immigration. Since 1990, immigrants have contributed to job growth in three main ways: They fill an increasing share of jobs overall, they take jobs in labor-scarce regions, and they fill the types of jobs native workers often shun. The foreign-born make up only 11.3 percent of the U.S. population and 14 percent of the labor force. But amazingly, the flow of foreign-born is so large that immigrants currently account for a larger share of labor force growth than natives (Chart 1).”

Foreign-born share of U.S. Labor Force and Labor Force Growth; Orrenius, Dallas FRB

Foreign-born share of U.S. Labor Force and Labor Force Growth; Orrenius, Dallas FRB

Foreign-born share of U.S. labor force and labor force growth

Pia M. Orrenius, senior economist in the Research Department of the Federal Reserve Bank of Dallas, Southwest Economy, Issue 6, November/December 2003, Federal Reserve Bank of Dallas


Economist magazine goes free

July 12, 2007

Good news for economics teachers.

The venerable London-based magazine, The Economist, now provides content for the current issue, on-line, for free. After a time the content goes behind the proprietary wall, much like the New York Times. But for a week, at least, you can get the latest from this premium publication.

If you’re really into the magazine, you can sign up for the Economist screensaver, which will give you access to their compilation of economic statistics for the world, and quick access to the current issue.

The Economist, cover, July 12, 2007

I find the charts and articles each week provide a plethora of warm-up possibilities, project backup, or supplementary information to bring economics to life for students. It’s one of the more expensive magazines available, though, and I do wish they had significant discounts for educators or classroom use.


DDT: The problems the WHO/Rachel Carson critics don’t want you to know

July 10, 2007

The merry bands of hoaxsters at “JunkScience.com” and the Competitive Enterprise Institute hope you think DDT is a well-targeted, perfect solution to get rid of malaria. They ignore the devastating effects DDT has on birds, bats and other mammals (including humans), beneficial insects and fish. They don’t care about the difficulties in treating malaria in hospitals, which would continue or grow worse were DDT to be sprayed willy-nilly across the malaria-endemic world.

Cover, War on Insects

Plus, CEI is well-funded and has been hammering away on spreading the hoaxes for several years. You may have to dig hard to find the facts, such as the fact that the inventors of DDT as insecticide warned against over-use exactly as did Rachel Carson, (see the Dove Docs archives), or that the death of beneficial insects and beneficial animals can cause disasters, too — or did CEI tell you that DDT can cause your roof to cave in, in Borneo, and that they had to parachute cats in to prevent an epidemic of typhus, caused by DDT?

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