DDT damages plants, too?

September 20, 2007

A columnist for The Christian Science Monitor argues that DDT damages plants, too — more reasons not to release it into the wild.

DDT stunts food crops? Plants?  Is that accurate?

Go see:

For the past several years, Jennifer E. Fox at the University of Oregon in Eugene has used test tube experiments to study the subtle way pesticides impede this nitrogen-fixing process. Last June she joined several colleagues to report research with real plants. Their paper, published in the Proceedings of the National Academy of Sciences, shows that the pesticides block the bacteria recruitment “signal” that legumes emit. “In essence,” Dr. Fox says, “the agrichemicals are cutting the lines of communication between the host plants and symbiotic bacteria.”

This has serious implications for farmers. Heavy use of commercial nitrogen fertilizers is showing diminishing returns in terms of crop yields, while fertilizer runoff contaminates streams, lakes, and even coastal ocean areas. If legumes can’t do their natural fertilizing job, even more artificial fertilizer will be required.


1872 Mining Act – Amend it now?

September 20, 2007

Sherffius cartoon on Bush administration mining regulations

Few people know about the law. Since 1872, mineral extraction from the public lands of the United States has been governed by a law designed to make it easy for miners to get minerals out. The law is essentially unchanged, though some mining operations are now bound by other laws to protect the environment and other uses of public lands, such as grazing, tourism, scientific study, wood production, grazing, wildlife management and hunting.

The Senate Committee on Energy and Natural Resources opens hearings on reforming the law next Thursday, September 27. The hearing will be webcast, most likely.

The House of Representatives has already had a couple of field hearings.

Watch your claims!

Resources:


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.


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 »


Gerald Ford, National Park Ranger

January 1, 2007

Gerald Ford was a very likable guy.  Since his death last week, I have been impressed with the number of people who have stepped forward with different stories about how Ford was just a regular guy called to duty.

Researching the updating of the story about the sale of creationist books in the Grand Canyon, I stumbled into a press release from the National Park Service.  It turns out that Ford is the only president ever to have worked as a National Park Ranger (well, the National Park Service itself has only been around since 1901, so that lets out about half the presidents from even the possibility — though, of course, Yellowstone was established in 1862 1872).

In the summer of 1936 Ford worked in Yellowstone National Park.  He had duties that sound rather quaint and definitely antiquated today:  Ford was a guard on the bear feeding truck.  Bears have to fend for themselves in today’s National Parks.  No, it’s not due to budget cuts in bear food.  Bears do better as wild creatures, and so feeding was stopped to discourage them from becoming tame and dependent on humans.

Gerald Ford, ranger mensch.