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Science News Review

Thursday
24 July 2008

Science news for the average citizen.

Fill ‘er Up!

…with Bug Juice, please.

microbe

When I started college in the late 1960s in Oklahoma, I could buy gas for my Volkswagon Bug for 19.9¢ a gallon. That’s 5 gallons for a dollar, enough to drive home to visit the folks, drive around town to see friends, and get back to college without having to stop at a gas station. This past weekend I drove our little pickup to Gatlinburg, Tennessee to see an old Navy buddy, a round trip equivalent to that past Oklahoma weekend trek. Gas for the journey cost us right around $50. A dollar’s worth won’t get me to the grocery store and back any more, and it doesn’t look like the price is ever going to come down.

The going price per barrel of petroleum is pushing $150 hard and will probably go over $200 before the end of the year. Diesel fuel is a dollar more expensive than gasoline, and the price of everything grown on a farm and transported by ship, train or truck must go up accordingly.

The good news - or, at least the hopeful news is that progress is being made in deciding what replacement fuels we should be developing. Most people are skeptical of corn-based ethanol and the diversion of food crops as well as crop land to biofuels. And while new techniques can make biofuels from native vegetation like switchgrass or even algae, the fact is that plants aren’t very efficient at converting solar energy into the biomass required.

Biotech researchers are now turning to engineered microorganisms as both helpers in turning biomass into fuels and as fuel themselves - photosynthetic bacteria that can capture sunlight energy 100 times more efficiently than plants - that can be grown in massive amounts without competing for cropland.

It does appear that the time has finally come when human civilization must change its ways, the only questions being how much it’s going to hurt regular people and which nations and/or multinational corporations will corner the markets. Perhaps biotechnology can be put to good use creating new fuel sources instead of turning staple foods into pesticides. That would be a positive change of focus, help get the tarnish of public resistance off the biotech bus, and maybe even save the planet.

But you and I will probably be paying at least $5 a gallon to fill our tanks, no matter what kind of fuels are developed. Just something we’ll have to get used to.

Links:

New Source for Biofuels Discovered
Harnessing Microbes to Meet Future Energy Needs
Are microbes the answer to the energy crisis?

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The ‘08 Farm Bill and Improving America’s Diet

fruitveggies

The 2007 Farm Bill - now the 2008 Farm Bill, was passed by both chambers of Congress, vetoed by President Bush, then the veto was overridden by both houses and is now the ‘Law of the Land’. Politically, the bill isn’t perfect, there is still too much pork and payments to rich agribusiness concerns for their poor farming practices, and not enough clarifying guidelines for biofuels production and organic farming.

But it’s a lot better than no bill at all, which would have kept the last support bill in place for the foreseeable future. The new bill has incentives to clean up residue discharges in important watersheds, and supports for best practices in crop rotations, cover crops and low-chemical input farming. It’s still strong on commodity production (corn, wheat, rice), but does put some real support into farmer’s market promotions and expansion of organic markets. It does somewhat limit subsidies to near-millionaire commodity farmers, requires more fresh fruit and vegetables to be available in schools, increases food stamp benefits as tied to the price of food, allots priority funding to research into the bee die-off situation, and supports rural enterprise and microenterprise investments.

Research into the “typical American diet” and its relationship to serious health issues and obesity informs us that Americans eat way too much junk and not nearly enough healthy food. Which, in a country that rations health care by income level and allows insurance companies to exclude people who actually need health care, would seem to be an important issue to address with education and real food availability in public institutions such as schools.
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Biotech Propaganda Meets Scientific Reality

Monsanto

In its mad bid to privatize and control the world’s agriculture and food supply with its patented biotech seeds and cushy revolving door within governmental regulatory agencies, Monsanto cannot be very happy with a recent Soil Association report that shows GM crops decrease yields, whether it’s cotton or soybeans or corn.

As reported in The Washington Post, the biotech industry immediately released yet another bought-and-paid-for report claiming totally opposite conclusions (some things don’t change just because the science is against you). The Soil Association report took a serious look at reality, something quite refreshing in this field. The material included among other citations:

• a 2007 study from Kansas State University that showed Roundup Ready soy has suffered “yield drag” since it was introduced, producing an average of 9-25% less per acre than conventional soy.

• a rigorous independent US study under controlled conditions demonstrating that Bt corn yields up to 12% less than conventional corn.

• an article in Nature Biotechnology reporting that Bt cotton doesn’t even express the engineered pesticide in 25% of some varieties sold under exclusive license.

The crop failures and their tragic effects on farmers in poorer nations may be a product of the technology itself according to some analysts.
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Attack of the Killer Bee… er, Bee Killer

bees

Bloomberg reported today that whatever killed the bees last year is back again this year, threatening some $15 billion worth of crops that depend on bees for pollination.

Honeybee Deaths Resume in U.S. Hives cites the USDA’s top honeybee researcher as saying that the effects of continuing Colony Collapse Disorder should become apparent by the end of the month, when growers will see how effective the pollination of California’s huge almond crop has been.

“Colony Collapse Disorder” is a fancy name for an unknown entity, since no one has been able to figure out what’s killing the bees. The bees that have been found (most just disappear) have devastated immune systems, but still no one knows what, exactly, they’re dying of. The US lost a quarter of all hives in 2006 and 2007, and may lose that much or more this year despite the importation of Australian bees to replenish the supply.

Some experts think a virus is responsible, others say that any illness could easily kill bees whose immune systems have been seriously compromised, so it’s whatever is attacking immune systems that is the real killer. Dead bees that remain in the hives are infected with a host of pathogens - “every known bee virus” according to UK’s The Independent newspaper - not just one. Some bees were carrying five or six viruses at the same time, along with fungal infections. That is more likely to be a pesticide or herbicide being used on the crops or on neighboring crops, though others claim it’s just stress.

Some experts in Europe, where Colony Collapse Disorder is hitting Germany hard, are concerned about pollen from genetically modified crops, many of which contain microbial toxins - pesticide - in every cell. If that turns out to be the issue, farmers may end up with restrictions on growing genetically engineered crops in regions where bee pollinated crops are also grown. Research demonstrating that the transgenes in GE crops have migrated to wild plants may make restrictions a moot point, however, and we’ll just have to come up with another way to pollinate crops.

Links:

Honeybee Deaths Resume in U.S. Hives

NRDC: The Bees’ Needs

The Silence of the Bees

European Bees Also Taking a Nosedive - Perhaps GM Crops?

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Uneven Ecological and Economic Impacts of Rich vs. Poor

PieChart

Where ecological footprints fall. The environmental impacts of high- (red), middle- (blue) and low- (yellow) income nations fall on other income tiers, as indicated by the footprints. The numbers are in trillions of 2005 international dollars. (Credit: Thara Srinivasan/UC Berkeley)

Rich Nations’ Environmental Footprints Tread Heavily on Poor Countries offers a study led by former UC-Berkeley Thara Srinivasan that examined the impacts of intensive agricultural expansion, deforestation, overfishing. loss of mangrove swamps and forests, ozone depletion and climate change between 1961 and 2000.

For the 3-year project Srinivasan teamed up with Richard B. Norgaard, an ecological economist and professor of energy and resources at UC-Berkeley. This allowed the team to evaluate economic impacts as well as ecological footprints.

Not surprisingly, the team noticed that poor nations are much more adversely impacted than rich nations. The calculation of “ecological footprints” of low, middle and high income nations demonstrated graphically that the large ecological footprints of rich nations unfairly impact poor nations whose footprints are small.

Economically speaking, the impact on poor nations is greater than the entire debt of those nations, about which Srinivasan said, “The ecological debt could more than offset the financial debt of low-income nations.” And middle-income nations had impacts on poor nations equivalent to the rich nations.

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Genetically Engineered Corn Endangers Aquatic Ecosystems

corn

The Chicago Tribune reports this week that scientists at Loyola University have established that the pollen, leaves and other plant parts of corn engineered to kill the European corn borer with Bt toxins could endanger the American midwest’s aquatic ecosystems when washed into nearby streams.

When eaten by aquatic insects called caddisflies, the Bt toxin stunts growth and increases mortality. These insects are food for fish and amphibians in the ecosystem. The scientists reportedly ‘feel’ that such unanticipated effects of GE technology need to be investigated, but of course the EPA and USDA (and Monsanto) don’t feel that way at all.

It might be difficult to separate the effects of GE plant wastes from the general toxic overload caused by modern agribusiness mega-farming practices, which also cause death and deformity among aquatic life forms and amphibians in midwestern ecosystems. And while consumers at home and abroad have made it known that they do not wish to consume genetically engineered pesticides disguised as food, the new market for corn as ethanol fodder makes it unlikely that GM corn is going to be phased out any time soon.

Related Links:

Older farmers less likely to plant Bt corn

GM corn might affect ecosystems

Eat to Live: 1 million against GM food

Eat to Live: Agriculture inspectors chided

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