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Willie Smits

A colleague pointed me to a lecture on TED given by conservationist Willie Smits who organized an effort to regrow a site of clear cut rain forest and restore a population of orangutans that had been threatened by deforestation. I was left thoroughly impressed with not only the level of task that he had taken on, but his striking process in approaching, analyzing and then attacking a complex problem. There are many activists and organizations trying to stem the damaged caused by deforestation around the world, but far fewer are finding ways to repair the damage that has already been done. Dubbed Samboja Lestari, this testing ground has found staggering results in turning a swath of fire-ridden, Indonesian grasslands  into a new budding forest landscape in under five years. His efforts have renewed levels of biodiversity, increased local rainfall and cloud cover, and provided a new industry base that has given jobs to hundreds of people.

“The real key to doing it, to give a simple answer, is integration.”

He says “integration,” I say “interconnection,” but the minor difference in semantics points to the same result of recognizing the vast number of reactions that comes from any one event and how integral, but sometimes difficult, it is to strike the important level of environmental balance.  Smits’ words and anecdotes highlight many valuable perspectives concerning sustainability and the tackling of large, seemingly insurmountable issues, but Smits’ is not just throwing around theory for the proof of his success in Borneo bears a complexity and resilience that few have been able to achieve. Within, there are a number of lessons that can be extracted and used for addressing our own series of dilemmas on any scale.

“It is the diversity that makes it work.”

Willie walks through the complicated task of creating a base of permaculture by integrating hundreds of species of plants so that each will offer a reflexive benefit to the others planted around it. Some plants are fast-growing to offer shade. Some are fruit-bearing to yield food for animals. Some are small but integral for rejuvenating nutrients in the soil. This kind of integration cannot be achieved without thoroughly analyzing the problem and all the components of each option for a solution.

The current state of our economy and the desire for progress has made the risk of throwing money at problems with the goal of reaching solutions as fast as possible. Healthcare, transportation, education, the environment; all complex issues for which hasty action could lead to short-lived relief. Throwing wind turbines everywhere to combat global warming without developing viable means of power storage is what leads to rolling blackouts in Germany. The real energy answer is a combination of renewables (with storage), coal conversion to biomass, nuclear, natural gas, a smarter grid system and increased efficiency to lower our national consumption.

There are few simple problems and even fewer simple solutions. At all scales we should be taking the time to study the solution as much as the problem to increase the likelihood of meaningful, lasting results.

“At every step of the way the local people were going to be fully involved”

Willie Smits decided early on that any chance on true revitalization of this landscape could not simply be his grand vision imposed on an indigenous society. Even if his test was successful, he alone could not maintain the project indefinitely. The rebuilding of a rainforest had to be inextricably tied to the local people who would share both the costs and rewards of the effort. Those that helped plant and manage the forest found jobs, land for homes and eventually crops as the beginning of a new life seamlessly tied to re-growth. The success of the forest became the success of all participants.

A devastated rainforest is only separated by a few degrees from many of our post-industrial cities around America. These small cities that exploded in the first quarter of the twentieth century had their momentum crash with the evaporation of domestic industrial production. These urban ecosystems failed—leaving streets of vacant homes, deflated populations and depleted tax revenues that left them struggling for survival. New efforts to rehabilitate our ailing cities must include and utilize local citizens, yielding them a stake in both the risk and reward of a new cityscape.

“If I can do this on the worst possible place that I can think of, where there is really nothing left, no one will have an excuse to say, ‘yeah but….’”

It is important to note success stories like this one to recalibrate our own idea of challenges that need to be overcome. If Smits can find progress in a society with 50% unemployment where 22% of the average income is spent on fresh water then we are without room to give the “it cannot be done” rebuttal to any dilemma that we currently face in the U.S..

NIMBY Wind Farm

Sometimes the products of technology and infrastructure have a certain beauty that compliments their functional necessity, but all too often our aversion to the appearance of key service components conflicts with our desire for their services to be readily available. Renewable energy production, such as wind turbines and solar power stations, are increasingly becoming the targets of backlash, even from environmental supporters, when it comes time to locate them. A new strategy for overcoming the next generation of NIMBY (Not In My Back Yard) sentiment is imperative to avoid our recent progress in sustainability from hitting a wall.

Polling from numerous sources repeatedly points to a growing population of U.S. citizens supporting the need to address climate change and transfer our production of energy to renewable sources. People will sign petitions, click “yes” on websites and maybe even call their Congressman in support of green energy. But in true American style, when it comes to actually implementing the goal the discussion turns into a barrage of finger-pointing with no one wanting to have to look at the finished product.

The lack of willingness to actively participate in the necessities of society is one of our blaring moments of shortsightedness. As a country that enjoys an elevated standard of living, its rise has been paralleled not only by an increasingly complex and expansive array of technology necessary to sustain it, but also a lack of responsibility for making it possible. Having a water treatment facility within a block from your home is a fallacy, but blame is thrown instantly at the onset of an E. coli breakout. No one wants to see high voltage power lines but brownouts are unacceptable.

One of the more famous examples is the repeated stalling of the Cape Wind Project that meant to erect 130 wind turbines in Nantucket Sound with a maximum capacity of 420MW. The program claims that in average winds the wind farm could provide 75% of the energy for Cape Cod and its surrounding islands. However, local residents have opposed the project due to the possibility of tarnishing their ocean view. Keep in mind that the wind turbines will be 5 to 13 miles from shore so that an onlooker could reportedly extend an arm and cover one with the fingernail on a thumb.

Unsurprisingly, continuously pushing renewables to the outskirts of society increases the amount of transmission (materials, land, installation, maintenance, replacement) needed to transport the power, increasing the amount of power lost in transit and raising the price of the power that gets there (which in turn compounds the problem.) Heaven forbid we need to pay more for power that is more sustainable and less polluting. Who would think that in a capitalistic economy the cheapest solution is not always the best?

One option is to give the federal government more power in making decisions for renewable energy sites and new transmission lines, but the prospect of increased government intervention is already causing politicians to butt heads on the Climate Bill. Another option is to use government policy that sweetens the deal for proximity to new energy solutions. (For Liberals, this would mean tax people the farther they get from renewable energy. For Conservatives, it would mean provide subsidies for those willing to live next door. For me, I would say do both.)

Yet another possibility is to redesign these facilities for a new aesthetic reading. After all, most of the time these components of infrastructure are designed by engineers. As an architect, I can respect and appreciate the simplicity and functional efficiency of how engineers design. Their goal of streamlined products that serve a specified purpose can be seen in old warehouses, factories and power stations. Nonetheless, they are usually not trying to win beauty contests. Some of these creations could not get a facelift to draw a different impression from surrounding onlookers.

Trash and Recycling CenterSpanish architecture firm Abalos and Herreros has a portfolio of work that has reinvestigated the appearance and nature of industrial programs like their recycling center in Valdemingómez, Spain. Contrary to the American standard of cheap metal siding and standing seam roofs, their facility is wrought with light to illuminate a terraced interior designed with an elegant order for industrial function. Solar farms and biomass plants could conceivably be realized in a second generation that is more viewer-friendly.

I do not believe that the largest impediment in the path of environmental stewards is convincing people that changes should be made. Regardless of the debate on climate change, sustainability and efficiency just make sense. Preserving our resources, keeping our air, water and land clean; it is just smart and more people realize that everyday. The impasse is instilling not the notion, but the drive for everyone to contribute and accept part of the collective onus to change—and make no mistake, things will need to change. Sustainability is not a technological fix. Our levels of consumption cannot be supplemented with gizmos.

Personally, I think that wind turbines and CSP plants have their own manner of beauty to them, like an ipod or a 40” Samsung LCD television, but I do not know if my sentiment has reached the majority yet.

Photo Credit: Flickr via AbracaDebra

Recycled Paper

In an international landscape, many claim that sustainable measures in the U.S. lose their steam if the industrial economies of China and India are not on board. Similarly, within the U.S., efforts of individual citizens need to be paired with corporations doing their part to change the course of business to greener ends. A recent study suggests that some large corporations are beginning to alter their daily operations to align themselves with greener options of stocking their paper products. According to the Green Grades report of twelve companies, conducted jointly by the Dogwood Alliance and Forest Ethics, corporate powerhouses like Fed-Ex and Office Depot are on the path to a more sustainable paper trail while others still have a long way to go.

The Green Grades study looked at six areas of sustainable paper usage including FSC certified products, avoiding paper from endangered forests and recycling policies. Fed-Ex stood at the head of the class, earning an “A-“ from the study for excelling in responsible sourcing of materials and using FSC certified products. They are not a bad company to be leading the pack as not only one of the largest shipping companies by the owners and operators of one of the largest copy-center chains as well. Followed by Staples, Office Depot and OfficeMax, some of the bellwethers seem to be catching on.

On the other hand, not every company can join Bank of America  and its One Bryant Park as the epitome of environmental reform. Some companies have yet to even scratch the surface. I was surprised by some of the laggards. Amazon.com and Costco received failing grades, followed closely by the “D+” rankings of Target and Wal-Mart, all apparently suffering from sourcing their paper products from endangered forests and questionable suppliers.

There is a lot to be said for targeting paper products as a component of our waste stream. According to the EPA, in 2007 paper and paperboard comprise a third of our waste— 83 million tons. The negative effects of the paper industry are also relatively immediate and encompassing. Illegal logging in both Asia and South America lead the destruction of rain forests and risk removing entire ecosystems of life around the planet, not to mention the tremendous carbon sinks that old growth trees provide.

But the largest waste source is also one of the easiest to fix. Sustainable forestry is growing in popularity as organizations like the Forest Stewardship Council gain exposure and notoriety. As digital media continues to advance, numerous extraneous paper habits can be replaced with a bit of foresight and focus. For the material that has to still be printed, paper is also one of the easiest products to recycle.

I was not surprised at the deficiencies in recycling which comprised the lower marks of even the highest ranking companies. Years ago, a discussion I had with Tom Rhoads of the Onondaga Country Resource Recovery Agency in Syracuse, New York, he told me that when it came to recycling many residents were already on board, earning Syracuse one of the highest recycling rates in the state. But it was the businesses that were notoriously hard to convince. Here in Manhattan the field is much the same.

It is markedly easy for a slightly educated consumer to contribute to more sustainable paper purchasing. Whether it is essentials like paper plates, toilet paper and paper towels or supplies like printer paper, purchasing FSC certified or recycled content is a small added price to pay (perhaps an extra dollar) while the effects are far reaching. The more responsible materials we can purchase, the more that the rise in demand will shift jobs from older corners of the industry to their more responsible counterparts until a new standard is fully implemented and better practices are commonplace. Less consumption and waste all lead to fewer landfills, lower costs of removal, more efficient manufacturing and healthier ecosystems to reduce the carbon pressure on the environment.

As our technological boundaries continue to be conquered and redrawn, there are some on the bleeding edge of innovation that seem to blur the line between technology and magic. What Cambridge, Massachusetts based Joule Biotechnologies is claiming to have accomplished seems nothing short of magical: putting organisms, sunlight and carbon dioxide into a box and making a viable petroleum substitute appear. No drilling, no burning off waste. According to the company, that has been operating in stealth mode for nearly two years time, they are ushering in the new standard of fuel as essentially, liquid solar power.

“There is no question that viable, renewable fuels are vitally important, both for economic and environmental reasons. And while many novel approaches have been explored, none has been able to clear the roadblocks caused by high production costs, environmental burden and lack of real scale,” said Bill Sims, president and CEO.

If correct, their plan can take two of the most abundant things on the planet—photons and carbon dioxide—and circumvent the need to be drilling more wells searching for oil. Their “black box” is dubbed a Solar Converter, which reportedly uses proprietary organisms to induce photosynthesis, creating a hydrocarbon liquid the company calls SolarFuel. Simms points out that this separates them from a biofuel process, like ethanol, which uses a plant base for its feed stock.

SolarFuel

The prospect of sun fed fuel could impressively leap-frog the ethanol industry, replacing it as the renewable fuel of choice given that its carbon footprint could vastly outperform ethanol’s much debated, corn-based and energy intensive process. Eventually, such a model could propose to achieve the impossible: bring the use and production of our country’s fuel to a level of stasis with the net input of carbon equaling the net output of its use.

Joule Biotech says they can create 20,000 gallons of fuel per acre at roughly $50 a barrel with current subsidies, certainly a competitive price point out of the box. Furthermore, the fuel is purportedly going to be compatible with existing engines for diesel and gasoline, wiping out the potential snag of retooling an industry. With a pilot plant scheduled to come online in 2010, their next milestone could be a ramp up for commercial scale production in 2012 with additional investing. Despite not knowing how cleanly the fuel burns in comparison to ethanol or conventional gasoline, the prospects of carbon improvement on the national scale are far-reaching.

So where is the downside? I had trouble finding one myself. Though I have to admit that the claims bring to mind another magical fix that spawned years ago called Thermal Conversion Process (TCP) technology developed by a company called Renewable Energy Solutions.

Their process claimed to make synthetic petroleum from super-heating agricultural and industrial waste such as tires, plastics and paper. The idea seemed attractive when they claimed their only by-products were fuel gas (butane, methane, propane mix), synthetic oil and water. The prospects seemed to offer a solution to not only our foreign oil dilemma, but a significant portion of our waste issue as well with (similarly) a virtually unlimited feedstock. Unfortunately, it seems no new plants other than the pilot plant in Carthage Missouri have been constructed and for some reason, they have not catalyzed a new standard in fuel production. Hopefully, we will be hearing much more from Joule Biotech in the near future.

According to the Energy Information Administration (EIA) the U.S. is making strides on its goals to bolster its renewable power portfolio. In their recently released Electric Power Monthly, an overview of our country’s sources and usage, the EIA reports that renewable energy, including hyrdoelectric sources, have jumped to 11.1% of our total production. Of the individual sources, wind power posted the largest gain with a 34.8% increase. Hydroelectric power increased 18.4% The news is complimented nicely by a slide of 13.9% in coal power production, leaving it as producing 46.1% of our total power needs. The rise of cleaner energy sources has positive timing with the Waxman-Markey bill that recently passed through the House and is now being ravaged on the floor of the Senate.

Renewable Energy Production

However, the news does bear some caveats. The EIA said that total consumption by the nation declined 4.6%, undoubtedly linked to the recession and decreases in industrial and manufacturing draws. The same reason was used to explain the notable decreased in coal power with more factories producing less and thus using less energy. As a result, a recovery in the economy could add some strength back to coal’s share of the pie.

Nevertheless, the footnotes do not diminish the weight of the opportunity. Keep in mind that these figures come without money coming from stimulus funding or anything related to the Waxman-Markey bill, should it survive its journey through Congress. Moreover, it could be a blessing that more coal plants are running idle when jobs are tight and investments are low, leaving the possibility of having cleaner options to choose from when we have the reason to turn more switches back on. With all hope, we may be able to replace, or at least deter the new construction of, coal plants by buoying the power supply with new investment in green power. The more dollars that can be diverted to sustainable power creation is more jobs that the industry can tote creating as well as working to lower the prices of technology and its resulting kilowatt hours.

Visions and promises for the “new standard” are becoming a daily attraction. Enough people have realized that for an advanced society many of our vital networks are often outmoded prompting plenty of innovators to work on replacement parts. Energy production, transportation, waste disposal, utility conveyance; all show signs of promising upgrades over the next half-century towards the endgame of efficiency. But for all the thought devoted to the new infrastructure systems, what should we be doing with the old ones?

Sustainable societal innovation is a two-sided coin. Defining a better standard should be paired with ways to allocate our existing landscape for new uses rather than simply calling it trash. Over the past century trillions of dollars have been used to construct the vast, national networks that we rely on implicitly. All of that is now latent value that should not be squandered. Like anything other byproduct of our economy these systems hold possibilities for new lives and uses along side their replacements.

Not long ago I sat in a conference room at the Green Buildings New York exposition listening to an engineer talk about improving efficiency through water reclamation and reuse. His name was Edward Clerico and he worked for Alliance Environmental as part of their team specializing on water efficiency—coincidentally, he is reportedly participating in efficiency work for One Bryant Park. From behind a wooden podium with a grainy microphone carrying his voice over worn carpet and faded ceiling tiles, he spoke with excitement about the growing trends of onsite water treatment and reuse. He pointed out that if more people take advantage of things like greywater systems and green roofs then our demand for water (and its disposal) may drop to the point that our infrastructure may no longer be completely necessary. Reservoirs, aqueducts and huge pipelines guiding water to major cities could wind up as over-built, archaic achievements of a different age. Could these things have another use in the face of drastic improvements of water efficiency? It occurred to me the design problem extended far beyond simply water.

With all hope, the future of distributing power will only hold a pale comparison to our current methods. Technologies like Smart Grid systems or completely decentralized systems can begin to shape how our new power grid could work. New steps in transporting power like high voltage superconducting lines could remove high tension wires and the scars that they cast across our landscapes. There must be countless uses for the metal of those giant towers while the land beneath them can return back to the forests, plains and wetlands that they disturbed upon construction.

coal plantPower production is another scenario where some of the oldest methods of generation are also the least sustainable—namely coal. Some of our oldest coal plants have already seen their 50th birthdays and are prime targets for retirement. Being one who completely supports ridding our country of coal-fired power, I am often asked what happens to the jobs and facilities at existing plants. Not a problem, we can still use them! Complete conversions of coal plants to accept new feedstocks, namely biomass, is already underway. Cleveland.com recently posted an article describing how FirstEnergy Corp released its plans to convert a 54-year-old plant on the Ohio River to burn grass and wood cubes to produce 312 megawatts of power, leaving it as one of the largest biomass plants in the country. The retooling of the plant purportedly saves 105 local jobs.

highline 1Perhaps my favorite candidate for infrastructural reuse is our road and railway systems. In response to the industrial boom, the first half of the twentieth century brought tens of thousands of miles of paved highways and metal track carving through cities across the country. The eventual decline of industrial production and shipping in the U.S. evaporated the necessity for many rail lines, so too providing an opportunity of reuse for these aging strips of land. The first section of The Highline opened only last week in Manhattan providing the first realization of a project that has been pursued by local residents for years. The elevated tracks snaking through the city’s west side that once carried freight trains up and down an industrialized Manhattan coastline now support a growing garden and a unique urban park. Having personally experienced the Highline since it’s opening, I can attest to its outstanding realization of an amazing urban project. Likewise, retired grade-level track beds are becoming perfect locations for bike and running trails, generating ties through existing communities. The Rails-to-Trails Conservancy is one of the movement’s strongest proponents.

Strides in mass transit could help bring about the same opportunities for our aging highways and viaducts. The Toronto Sun reported on the results of a conceptual design for the city’s Gardenier Expressway. Grown from the same seeds at the vision for the Highline, the “Green Ribbon”, designed by Les Klein of Quadrangle Architects, proposes to reclaim the elevated roadway for use as gardened parks and bicycle paths. The hypothetical model includes small wind and solar arrays to create power for the lighting systems of the gardenway. With an estimated price of $500-600 million (which is likely low), it is far from modest, but the figure becomes more plausible when one considers the estimated cost of $300 million just to tear it down.

The benefits to reuse are clear. Massive waste streams would be averted as well as the pollution and energy that is wasted on demolition. New visions mean more work, and work means jobs—which everyone loves. And new infrastructural archetypes can indirectly contribute to energy production, food growth and water management while still providing public amenities. All we need is a broader view of opportunity. Solely devoting focus to what we can create can raise the risk of forgetting what it is we already have.

Highline Photo Credit: David Berkowitz

Power Plant Photo Credit: Cleveland.com

On Tuesday I trekked over to the Javits Center on the West Side to spend the day at the Green Buildings NY expo. Overall it was an interesting collection of professionals and products that focused on managing and fitting buildings for sustainability. I had the chance to talk to a number of people and sit in on some conference sessions. Here are some of the highlights that the expo had to offer:

Efficiency through Water Reuse

AllianceEnvironmental_LogoI find it fascinating how seasoned professionals of any industry can create a presentation to highlight all of its environmental short comings. Edward Clerico of Alliance Environmental LLC painted a bleak picture of our water infrastructure. In his efforts to promote on-site filtration and reuse, he began in saying that our system of water supply and disposal uses 8 quads (that’s quadrillion BTUs) of energy every year. At the same time he pointed to how far on-site filtration systems have become and how greywater could become increasingly common. Uses such as site irrigation, cooling tower make-up and laundry washing can help buildings like the Solaire and One Bryant Park cut their water usage and discharge in half.

Green Demolitions

Based out of New England, Green Demolitions offers free demolition and removal of kitchens and bathrooms so that they can be completely reclaimed and resold for use in new projects. The prospective client can enjoy a sizable tax deduction instead of a hefty contractor bill for the removal. Speaking with John Green, manager of their Bethel, NY store, I learned the company donates all of its projects to Recovery Unlimited—a non profit dedicated to helping with substance abuse. Consumers can regularly spend 50%-80% less for a new kitchens, bathrooms or appliances. Their cause has lead them to not only provide a charitable source of income, but divert tons of material from landfills as they promote reuse.

Greenpatch Pavement

Greenpatch is one of the players exploring the new realm of cold asphalt pavement. Hearing “green” and “asphalt” next to each other was surprising to me, but the product specializing in filling potholes and repairing roads has numerous sustainable benefits. Not only does the asphalt require no heat to be applied (which saves a generous amount of energy) but it can also be manufactured at lower temperatures (which saves even more.) Its mix contains 40% recycled asphalt and no petroleum solvents. Unlike other cold-patch products, Greenpatch contains zero Volatile Organic Compounds (VOCs) that normally can leech into the ground or off-gas into the air. Even their packaging is recyclable. Overall, it was an impressive product.

JM Insulation

int_head_logoJohns Manville is a producer of many building products, one of them being fiberglass insulation. Again, normally the term causes environmentalists or green building proponents to roll their eyes and turn back towards soy-based, blow-in alternatives. But these guys are making an attempt to give fiberglass a better name. Their insulation uses 25% recycled glass with 20% being post-consumer glass (more than any other manufacturer.) They actually claim that fiberglass insulation is the largest secondary market for recycled glass. Their new line has removed all formaldehyde, a common ingredient in bonding agents, from their insulation to help with indoor air quality.

Retro-Commissioning

Allan Skodowski gave an enlightening talk on the importance of retro-commissioning. Any building seeking LEED certification is familiar with commissioning, a process that tests the designed systems of a building to make sure they function as intended and with peak efficiency. But Skodowski, who helps commission buildings for Transwestern, says that existing buildings should also be commissioned to ensure their systems are not falling into lethargy and negligence. As technologies improve and systems wear down, most buildings can run at around 78% of average energy costs through commissioning—a number that can drop to 60% with dedicated, consistent study.

With the growing media focus on energy and carbon it is easy to lose sight of all the things that contribute to our energy usage and our carbon footprints. The strict focus on small parts of our economy’s environmental challenges only emulates how prone we are to isolating concepts and events rather than continually viewing our actions as an interconnected whole. Waste production is another prime place for progress that is not so far away from carbon caps and the renewable energy debate. The collection, sorting, compacting, dumping and even recycling of waste all uses energy so to strip down its girth is a boon to our greater goals. When it comes to waste, plastics stand out as a prime target for reorganization and an answer that quickly comes to mind is biopolymers—naturally based plastic compounds. Continue Reading…

I repeatedly suggest that one of the largest barriers to a more sustainable economy is ignorance. Most people are simply not aware of the problems, let alone the solutions, and as such the pitch for a different lifestyle (call is environmentally sound, ecologically efficient or simply “green”) can be a tough sell. So if the problem is a lack of education who is responsible for fixing it? We are quick to point fingers at tech companies, developers, car manufacturers—the producers of “stuff” that we consume to keep our economy afloat. But at the end of the day we cannot pile all of the onus on entities and organizations to force information onto us, we too have a responsibility to seek it out for ourselves. Continue Reading…

With a growing population raising the need for food, water and energy efficiency of spatial utilization is paramount. Our cities should be denser and farmland managed with greater care. But what if we could take some of the harshest land on the planet and use it to supplement these needs at a low cost? Three firms have proposed a method to use the Sahara Desert as the next prime ground for creating fresh food, fresh water and clean energy. Despite the fact that the project has been around for over a year, it exemplifies the kind of coordination and synergy that Intercon promotes and the direction our society should be moving towards.

via exploration-architecture.com

The center of the project begins in collaboration. I find it no coincidence that innovative thinking is the result of numerous minds from different, but interconnected, fields working together. Shaping the vision are the firms Exploration Architecture, Seawater Greenhouse Limited and Max Fordham & Partners—architects, water specialists and environmental engineers respectively. Like all areas of study, each of these three offer a vintage of expertise that bears opportunities for interconnection with others.

This triumvirate based their innovative offensive in the face of a slow-moving but devastating dilemma: the growing of the world’s deserts. With all of the issues that the planet has on its plate right now (war, recession, healthcare, global warming) the issue of desertification is not on the radar screen of many, but its existence is very real. The miles of flat, arid landscapes with their unyielding temperatures and unforgiving sandy soils expand their borders every year, swallowing more fertile land and stripping it of its moisture. Up until now we have accepted this occurrence as a problem beyond our ability to address.

But then again, maybe we can. Using an interconnected combination of Concentrated Solar Power fields and Seawater Greenhouses the system can theoretically function indefinitely with nearly no influx of new energy or resources.

Sahara Forest Diagram

How it Works:

To begin, seawater is drawn into each greenhouse complex and dripped over evaporators to be turned into vapor, creating a warm, humid environment poised for growing plants. More water suspended in the air reduces the amount of fresh water needed for direct irrigation. When the air is cycled through the greenhouse to bring more carbon dioxide to the plants, the humid air is released back into the atmosphere and adds moisture to the local environment. The design team proposes that with enough acreage, it may contribute enough added moisture to induce local rainfall.

The evaporators find their necessary power from Concentrated Solar Power (CSP) arrays stretched out across the landscape. Using mirrors to focus sunlight and heat liquid for steam production, CSP is viewed by many as the most viable source of renewable energy in the near term. It can be twice as efficient as photovoltaic panels in energy production as it uses the sun’s energy to create power. The system also produces a great deal of waste heat.

By themselves, these two systems are impressive technologies with a great deal of potential, but linked and integrated together, their possibilities rise exponentially. The excess heat of the CSP facilities can be captured through cogeneration and used for the desalination of more saltwater. The project team estimates that onsite power can desalinate 40 million cubic meters of water for terawatt-hour of harvested solar power—that is over 10.5 billion gallons. Strips of greenhouses can be arranged to shield the CSP mirror arrays and reduce dust and sand collection that lowers their efficiency. Three new export streams can emerge from each project location, all of which are in extreme demand around the globe: clean power, fresh water, fresh food.

Cyclical Progress:

As with any good system built on ecological underpinnings, its function begets its own continued success. Theoretically, as the installations grow in size and number more sand is replaced with greenhouses or planted fields. Moisture content in the air will continue to rise while the ground temperature of more acres will continue to fall. The expansion of deserts could be reversed to eventually re-vegetate some of the world’s harshest climates turning them into net producers of vital resources.

While the project is an impressive map for a regenerative, progressive model, I think that the possibilities go even further.

  • Plant waste from greenhouses is rich in nutrients and can be composted to produce a base for naturally fertilizing future crops or spread over surrounding area to instigate new native plant growth.
  • Another possibility is taking a page from the city of  Kalundborg’s playbook and using the wealth of heated salt water for fish farming. This could produce yet another food crop and another organic waste stream that can be used to create organic fertilizers.
  • So much desalination will also produce a great deal of salt, which draws us back to CSP. One of the reasons CSP seems so promising is the opportunity for power storage with heated salt solutions being one of the frontrunners. Eventually, excess power could be sold day and night to surrounding townships.

So what’s the catch? Well how much it costs to build solar greenhouses, CSP arrays and the labor to manage them all has to factor in somehow and chart a realistic time frame for expansion. There is also the fact that the Sahara is the world’s largest desert (3.3 million square miles) and constitutes nearly a quarter of Africa. Such statistics begs the question of how many facilities would have to be created before the stated goal of local climate alteration was actually achieved. The number could be staggering.

While I give the project a great deal of respect, we always have to remember that all of our operations and endeavors are subordinate to a much larger system. Even if the project does succeed, I have to ask what affect would a green Sahara have on the rest of the world’s ecosystems? Would rainfall in the Sahara prompt drier spells somewhere else? Could wind patterns or coastal currents change as a result of cooler regional temperatures? As interested as I am about the finer details that all seem to point towards success, I would also be curious about an analysis of the possibilities for global weather repercussions. Even the best of intentions do not occur in a vacuum.

Photo Credit: www.exploration-architecture.com