Globally, fossil fuels remain dominant over the Outlook period in the New Policies Scenario, though their share of the overall energy mix falls in favour of renewable energy sources and nuclear power. Oil nonetheless remains the leading fuel in the energy mix by 2035, followed by coal. Of the three fossil fuels, gas consumption grows most rapidly, its share of total energy use almost reaching that of coal.
Jan 5, 2011
Hot Cars by Hans Tore Tangerud
Reflecting on the "early days" of sustainable agriculture research and education - world.edu
- In the late 80′s we were emerging from a farm crisis that had accelerated the rate in which farmers were leaving the farm.
- The public had been frightened by two major media events causing us to worry about pesticides on our food, one concerning the safety of apples, the other concerning grapes from Chile.
- Pesticide residues were being found in rural wells, surface waters, snowfall, windblown soil and fog.
- Soil erosion made the front page of the Chicago Tribune and the CEO of Archer Daniels, Midland Co. claimed that soil loss was more dangerous a threat than nuclear war.
- permaculture and forest gardening,
- rotational grazing and seasonal dairying,
- food sovereignty,
- carbon farming,
- urban agriculture, and
- edible landscapes….
Please don’t stop caring and criticizing YOUR public university.
Free Online Tool for Farm Mapping - farm-file.com
Jan 4, 2011
8 Shops to Buy Rustic Reclaimed Wood Furniture From | BarefootFloor.com
Bees in freefall as study shows sharp US decline | Environment | The Guardian
The abundance of four common species of bumblebee in the US has dropped by 96% in just the past few decades, according to the most comprehensive national census of the insects. Scientists said the alarming decline, which could have devastating implications for the pollination of both wild and farmed plants, was likely to be a result of disease and low genetic diversity in bee populations.
Bumblebees are important pollinators of wild plants and agricultural crops around the world including tomatoes and berries thanks to their large body size, long tongues, and high-frequency buzzing, which helps release pollen from flowers.
Bees in general pollinate some 90% of the world's commercial plants, including most fruits, vegetables and nuts. Coffee, soya beans and cotton are all dependent on pollination by bees to increase yields. It is the start of a food chain that also sustains wild birds and animals.
But the insects, along with other crucial pollinators such as moths and hoverflies, have been in serious decline around the world since the last few decades of the 20th century. It is unclear why, but scientists think it is from a combination of new diseases, changing habitats around cities, and increasing use of pesticides.
Sydney Cameron, an entomologist at the University of Illinois, led a team on a three-year study of the changing distribution, genetic diversity and pathogens in eight species of bumblebees in the US.
By comparing her results with those in museum records of bee populations, she showed that the relative abundance of four of the sampled species (Bombus occidentalis, B. pensylvanicus, B. affinis andB. terricola) had declined by up to 96% and that their geographic ranges had contracted by 23% to 87%, some within just the past two decades.
Cameron's findings reflect similar studies across the world. According to the Centre for Ecology and Hydrology in the UK, three of the 25 British species of bumblebee are already extinct and half of the remainder have shown serious declines, often up to 70%, since around the 1970s. Last year, scientists inaugurated a £10m programme, called the Insect Pollinators Initiative, to look at the reasons behind the devastation in the insect population.
Cameron's team also showed that declining species of bee had higher infection levels of a pathogen called Nosema bombi and lower genetic diversity compared with the four species of bee that were not in decline –B. bifarius, B. vosnesenskii, B. impatiens and B. bimaculatus.
The N. bombi pathogen is commonly found in bumblebees throughout Europe but until now has been largely unstudied in North America. The infection reduces the lifespans of individual bees and also results in smaller colony sizes.
The reduction in genetic diversity seen in the declining bees means that they are less able to fight off any new pathogens or resist pollution or predators. "Higher pathogen prevalence and reduced genetic diversity are, thus, realistic predictors of these alarming patterns of decline in north America, although cause and effect remain uncertain," Cameron wrote today in Proceedings of the National Academy of Sciences.
Insects such as bees, moths and hoverflies pollinate around a third of the crops grown worldwide. If all of the UK's insect pollinators were wiped out, the drop in crop production would cost the UK economy up to £440m a year, equivalent to around 13% of the UK's income from farming.
The collapse in the global bee population is a major threat to crops. It is estimated that a third of everything we eat depends upon pollination by bees, which means they contribute some £26bn to the global economy.
Other identified causes of bee decline include parasites such as the bloodsucking varroa mite and viral and bacterial infections, pesticides and poor nutrition stemming from intensive farming methods.
"Pollinator decline has become a worldwide issue, raising increasing concerns over impacts on global food production, stability of pollination services, and disruption of plant-pollinator networks," wrote Cameron. "In accordance with the goals of the United Nations convention on biological diversity to reduce the rate of species loss by 2010, such efforts to elucidate the causes and ecological impacts of bumble bee decline, in co-ordination with informed conservation strategies, will go a long way to mitigating further losses."
A walk in the greenhouse « The Farming Engineers
Spinach, kale, lettuces, arugula, chard, cilantro, and a few assorted mustard greens are growing right now. We’re standing in front of a hay bale wall. Later on in the spring, we’ll pull down the bales to build tables for our seed starting flats.
Quarter-Sawn Lumber - Woodworking Tips - What is Quarter-Sawn Lumber?
Why Quarter-Saw Lumber?:
Quarter-sawn lumber is more stable, because it is cut in a manner that attempts to get as much of the end grain of the wood perpendicular to the face of the board as possible. Without having grain running parallel to the face of the board, there is far less chance of the board twisting or cupping as it dries, or worse, when in use in a project. The more square the end grain is to the face of the board, the more stable that board will likely be over the course of its life in the project.
Additionally, quarter-sawn lumber of a variety of species has a look that is unmatched by a rip-sawn board. Oak is a prime example: the grain of oak is much more wavy and displays medullary ray flecks that are far more unlikely to be visible if the board is rip-sawn. Because of these qualities, quarter-sawn oak was the primary type of wood used to create authentic Arts and Crafts era pieces of furniture.
How is a Tree Quarter-Sawn?:
There are a few methods of quarter-sawing a tree, but the most common is for the mill to cut the round tree into four quarters along the long axis of the tree, much like four 90-degree wedges of pie. These wedges are then placed with the center point facing upwards, and boards are ripped off of the wedge. As you might expect, the widest board will be from the center of the wedge, with very narrow boards from the edges. By cutting the tree in this manner, the growth rings (which form the grain of the wood) are going to be closer to square to the face of the board than on most of the boards from a rip-sawn tree.
How Does Quarter-Sawn Lumber Move?:
Properly quarter-sawn lumber will certainly move, just like all other cuts, based on fluctuations in humidity in the environment that the board is used. However, by cutting with the grain square to the face of the board, a quarter-sawn board will swell primarily across the face (making the board wider), whereas a rip-sawn board may grow in width and height (and very likely will twist or cup as it swells). Knowing how the wood will adjust to moisture changes should be considered when laying out the boards for your project.
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Dec 15, 2010
Beautiful Quartersawn White and Red Oak Boards
Quartersawn white and red oak are my favorite woods. The vertical lines on the end grain in the photo above are the growth rings, and the thin, almost horizontal lines are the medullary rays that radiate from the center of the tree out to the edge. When a ray crosses the surface of a board, the flaked figure appears. Quartersawn logs are more stable and are less likely to shrink, expand, and warp.
Quarter-sawing maximizes the beauty of Medullary Rays and Growth Rings of White and Red Oak. Above is an animation of the quarter-sawing process and the beautiful wood grain characteristics of the quartered and rift boards that result.
Credits: http://blogs.popularwoodworking.com/editorsblog/Frank+Miller+Lumber+Road+Trip.aspx
Dec 14, 2010
Our Reliance on Plants is Increasing
Between 1995 and 2005, the global demand for plant matter went up about five percent. In 1995, we required 20.3 percent of the plant material Earth currently produces (the photosynthetic capacity of the land). By 2005, that number increased to 25.6 percent both because each person is using more plant products and because there are more of us. Imhoff and his team reached these conclusions by comparing the rate at which people require plant products, in terms of carbon, to the rate that the Earth can produce plant carbon.
This map shows the comparison for 2005. The colors represent the ratio between the amount of carbon people require and the amount of carbon Earth produced. At the top of the scale (dark red), the population needs at least ten times more plants than are grown locally. At the lower end of the scale (dark green), the land produces more vegetation that the local population needs. Gray areas are places where people in the area use less than 10 percent of the vegetation growing there. In the center of the scale (pale yellow) people use most of the vegetation.
In general, the greatest use of plant products occurs in highly populated regions, like Asia and large cities, and places that can not produce enough to support the population’s requirements for plants, such as the African Sahel. Because these places use everything they grow and still need vegetation from elsewhere, they are very vulnerable to changes in climate that would reduce production and disruption in transportation that would make it more difficult to bring food and other plant products from other places.
The map shows the pressure on local ecosystems, but not per capita use. For example, in the United States, each person uses 5.94 metric tons of carbon (vegetation) per year, while in South-central Asia, people use 1.23 metric tons per year. However, the United States produces more than it requires, so the ratio between usage and vegetation is low. South-central Asia, on the other hand, uses less per person, but it has a high population that collectively require more carbon than the land produces, and so must import products from other regions.
“What we’re realizing is the biosphere doesn’t care whether you have a lot of people consuming a little or a few people consuming a lot. It’s the total amount or rate relative to what can be produced that is important,” says Imhoff. “Right now, humans are increasing both population and per capita consumption.” For this reason, it is important to monitor vegetation and land use on a global scale.
The vegetation measurements used to produce the map (net primary productivity) are a measure of the amount of carbon plants convert into plant matter (biomass) as recorded by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra and Aqua satellites. (Earlier research from 1995 used measurements from another sensor, AVHRR.)
The researchers measured the requirement for plant products by using statistics from the United Nations Food and Agriculture Organization, which reports how much food, livestock, and wood products each country produces, imports, and exports. They calculated usage by first determining what each country produces and imports and then subtracting exports. They calculated the amount of plant material (carbon) required to support such usage by using models that translate between final products, like flour, beef, or paper, and the amount of plant material required to produce the products. Finally, they divided by the population of the country to figure out how many plant products each person in the country uses on average. In the map, the requirement for plant products is mapped by population distribution.
When comparing carbon requirements and production for 2005 to earlier figures from 1995, Imhoff found that people were using about five percent more of Earth’s vegetation in 2005. “People worry about that percentage. If, in future scenarios, it’s going to go up to something like 50 percent, we’re looking at a very high demand for land management at all levels on the landscape. We would be heading toward a place where the planet would be very carefully managed, from end to end.”
To see an interview with Dr. Imhoff and to read more about this work, see How hard are we pushing the land? on the NASA web site.
References
Imhoff, M., Bounoua, L., and Zhang, P. (2010, December 15). Satellite supported estimates of human rate of NPP carbon use on land: Challenges ahead (pdf). Presented at the Fall Meeting of the American Geophysical Union.
Lynch, P. (2010, December 14). How hard are we pushing the land? NASA. Accessed December 14, 2010.
NASA image provided courtesy of Trent Schindler, Scientific Visualization Studio, using data provided by Marc Imhoff (NASA Goddard Space Flight Center). Caption by Holli Riebeek.
Instrument:
Terra - MODIS
Woodworking for engineers
Dec 6, 2010
Slow Money: Reconnecting the Economy to Soil, Biodiversity and Food Quality - Nature and Community - MOTHER EARTH NEWS
By Woody Tasch
The following is an excerpt from Inquiries into the Nature of Slow Money: Investing as if Food, Farms, and Fertility Mattered by Woody Tasch (Chelsea Green, 2008). Tasch presents an essential new strategy for investing in local food systems, and introduces a group of fiduciary activists who are exploring what should replace the outdated concepts of industrial finance and industrial agriculture. This excerpt is from the prologue.
Civilization is a big idea. So is the idea that as soil goes, so goes civilization. So is the idea that as money goes, so goes the soil. We don’t need any more big ideas.
We need small ideas. Beautiful ideas. Beautiful because they lead to a large number of beautiful, small actions — the kind alluded to by Wendell Berry: “Soil is not usually lost in slabs or heaps of magnificent tonnage. It is lost a little at a time over millions of acres by careless acts of millions of people. It cannot be solved by heroic feats of gigantic technology, but only by millions of small acts and restraints.”
There is another kind of erosion at work, just as surely, here: erosion of social capital, erosion of community, erosion of an understanding of our place in the scheme of things.
Peak Soil
It takes roughly a millennium to build an inch or two of soil. It takes less than 40 years, on average, to strip an inch of soil by farming in ways that are more focused on current yield than on sustaining fertility. A third of America’s topsoil has eroded since 1776. In the 1970s, the United States lost 4 billion tons of soil per year. Roughly a third of all farmland in the world has been degraded since World War II, with annual soil erosion worldwide equivalent to the loss of 12 million hectares of arable land, or 1 percent of total arable land. About a third of China’s 130 million hectares of farmland is seriously eroded, and Chinese crop yields fell by more than 10 percent from 1999 to 2003, despite increasing application of synthetic fertilizers.
Awareness of the centrality of soil health is nothing new. Aristotle laid the foundation for the humus theory of plant nutrition, and his student, Theophrastus, is often called “the father of botany.” The homo of Homo sapiens is derived from the Latin, humus, for living soil. Leonardo da Vinci observed, “We know more about the movement of the celestial bodies than about the soil underfoot.” Darwin spent the last years of his life studying the role of earthworms in soil fertility. After World War I, Sir Albert Howard, perhaps the father of 20th-century organic agriculture, heralded the problems that would follow the manufacture of synthetic fertilizers by munitions factories looking for new postwar markets for nitrates: Fertilizers offered farmers boosts in yield but had deleterious effects on the health of microorganisms and the processes of growth and decay that are vital to the preservation of humus. In the first decade of the 21st century, despite beyond-explosive growth in our knowledge of everything from atomic energy to galactic motion, our ignorance with respect to life teeming in the soil remains humbling: It is estimated that in a gram of soil, there are billions of single-celled organisms and millions more multicelled ones, as well as more than 4,000 species, most of them not yet named or studied by scientists.
Yet we have slipped during the past half century — as if pulled by the gravitational or centripetal forces of population growth, technological innovation, consumerism and free markets— into a food system that treats the soil as if it were nothing more than a medium for holding plant roots so that they can be force-fed a chemical diet.
We have become dependent on technology and synthetic inputs, subsidized by what was, until very recently, cheap oil, which facilitated not only the production of nitrogen fertilizer, but also the management of large-scale, mechanized farms and the energy-intensive system of processing and long-range transportation necessary to bring agricultural products to distant markets. Agriculture accounts for more than 20 percent of U.S. greenhouse gas emissions— all the more shocking when one realizes that recent science indicates that fertile soil is a potent carbon sink, holding the potential to play a significant role in remediating global warming.
The problems of our food and agricultural systems go beyond Peak Oil and Peak Soil, however. Aquifer depletion, biodiversity decline, widespread use of pesticides and other toxics, industrial feedlots that pose health and waste-management problems, nutrition and food safety challenges that attend centralized processing, the decline of rural economies, price volatility in global commodities markets: It is quite a litany, surprising in its breadth and even more surprising in the degree of its invisibility when seen through the lens of the modern economy.
A Flawed System
You wouldn’t use a 747 to go to the corner store for a quart of milk. You wouldn’t use a backhoe to plant a garlic bulb. You wouldn’t use a factory to raise a pig. You wouldn’t spray poison on your food. You wouldn’t trade fresh food from family farms down the road for irradiated or contaminated or chemical-laden or weeks-old food from industrial farms halfway around the world. You wouldn’t create financial incentives for farms to become so large that they need GPS technology to apply chemical inputs with quasi-military precision. You wouldn’t design a system that gets only 9 cents of every food dollar to the farmer. You wouldn’t allow topsoil to wash down the Mississippi River, replete with pesticides and fertilizer residues, creating a dead zone the size of Rhode Island in the Gulf of Mexico. You wouldn’t use 57 calories of petro-energy to produce one calorie of food energy.
No, no one ever sat down and designed such a system. Yet it is precisely such a technology-heavy, extractive, intermediation-laden food system that we now need to remediate and reform.
This is the system that has evolved in the wake of global capital markets and the investors who use them, much as industrial farmers use their land—as a medium into which to pour capital in order to harvest maximum yield.
Slow Money
In August 2007, at the 25th Anniversary Gala for the Rocky Mountain Institute, eminent panelists tried to answer questions posed by moderator Thomas Friedman: “If this is a win-win-win, if these new technologies and design solutions are so elegant and so profitable and so clean, what is holding them back? Where is the resistance to these innovations coming from?” Unexpectedly, because this was not a finance conference, the group discussion zeroed in on CEO compensation, short-term financial incentives, and the structure of capital markets.
Inventor Dean Kamen opined from the dais: “Venture capitalists have great enthusiasm but short attention spans. We are stuck in a 19th-century way of thinking that leads to large-scale, centralized production and power generation. We don’t have the mindset to really invest for the long-term in small-scale solutions that would improve life for billions of people.”
Such questions and observations lead to the premise for a new kind of financial intermediation, going by the improbable name of “slow money.”
That premise is this: The problems we face with respect to soil fertility, biodiversity, food quality and local economies are not primarily problems of technology. They are problems of finance. In a financial system organized to optimize the efficient use of capital, we should not be surprised to end up with cheapened food, millions of acres of GMO corn, billions of food miles, dying Main Streets, kids who think food comes from supermarkets, and obesity epidemics side by side with persistent hunger.
Speed is a big part of the problem. We are extracting generations’ worth of vitality from our land and our communities. We are acting as if the biological and the agrarian can be indefinitely subjugated to the technological and the industrial without significant consequence. We are, as the colloquial saying puts it, beginning to believe our own bullshit.
Which reminds me of a story.
About 15 years ago, I was turning a horse stall into my office. My first project was to shovel out the dried horse manure and shovel in sand, in advance of the construction of a wooden floor.
One day, reflecting on the transition from equine to intellectual, I realized, “How appropriate: from horseshit to bullshit.”
No discussion of the disconnect between capital markets and the land is complete without at least one reference to manure.
Let’s throw in a few bees and pigs, too:
“The story of colony collapse disorder and the story of drug-resistant staph are also the same story: Both are parables about the precariousness of monocultures. Whenever we try to rearrange natural systems along the lines of a machine or a factory, whether by raising too many pigs in one place or too many almond trees, whatever we may gain in industrial efficiency, we sacrifice in biological resilience. The question is not whether systems this brittle will break down, but when and how, and whether when they do, we’ll be prepared to treat the whole idea of sustainability as something more than a nice word.” — Michael Pollan
A Hot Potato
There is such a thing as money that is too fast.
Money that is too fast is money that has become so detached from people, place, and the activities that it is financing that not even the experts understand it fully. Money that is too fast makes it impossible to say whether the world economy is going through a correction in the credit markets, triggered by the subprime mortgage crisis, or whether we are teetering on the edge of something much deeper and more challenging, tied to petrodollars, derivatives, hedge funds, futures, arbitrage and a byzantine hyper-securitized system of intermediation that no quant, no program trader, no speculator, no investment bank CEO, can any longer fully understand or manage. Just as no one can say precisely where the meat in a hamburger comes from (it may contain meat from as many as hundreds of animals), no one can say where the money in this or that security has come from, where it is going, what is behind it, whether — if it were to be “stopped” and, like a hot potato, held by someone for more than a few instants — it represents any intrinsic or real value. Money that is too fast creates an environment in which, when questioned by the press about the outcome of the credit crisis, former treasury secretary Robert Rubin can only respond, “No one knows.”
This kind of befuddlement is what arises when the relationships among capital, community and bioregion are broken:
“There is an appropriate velocity for water set by geology, soils, vegetation and ecological relationships in a given landscape. There is an appropriate velocity for money that corresponds to long-term needs of communities rooted in particular places and to the necessity of preserving ecological capital. There is an appropriate velocity for information, set by the assimilative capacity of the mind and by the collective learning rate of communities and entire societies. Having exceeded the speed limits, we are vulnerable to ecological degradation, economic arrangements that are unjust and unsustainable, and, in the face of great and complex problems, to befuddlement that comes with information overload.” — David Orr
As long as money accelerates around the planet, divorced from where we live, our befuddlement will continue. As long as the way we invest is divorced from how we live and how we consume, our befuddlement will worsen. As long as the way we invest uproots companies, putting them in the hands of a broad, shallow pool of absentee shareholders whose primary goal is the endless growth of their financial capital, our befuddlement at the depletion of our social and natural capital will only deepen.
Read more: http://www.motherearthnews.com/print-article.aspx?id=2147492059#ixzz17OcfJEbL
Nov 26, 2010
Global Village Construction Set in 2 Minutes on Vimeo
Nov 21, 2010
World Energy Outlook Homepage
The 2010 edition of the World Energy Outlook (WEO) was released on 9 November and it provides updated projections of energy demand, production, trade and investment, fuel by fuel and region by region to 2035. It includes, for the first time, a new scenario that anticipates future actions by governments to meet the commitments they have made to tackle climate change and growing energy insecurity.
WEO-2010 also puts the spotlight on several topical issues, including what more must be done and spent post-Copenhagen to limit the global temperature increase to 2°C and how these actions would impact oil markets; how emerging economies – led by China and India – will increasingly shape the global energy landscape; the costs and benefits of increasing renewable energy, the outlook for Caspian energy markets and their implications for global energy supply, the future role for unconventional oil and the crucial importance of energy in achieving the UN Millennium Development Goals.
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