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EarthTalk, a column written by the editors at "E/The Environmental Magazine," answers readers' environmental questions. EarthTalk archives are at emagazine.com/earthtalk/archives.php. Got a question? Submit it at www.emagazine.com or e-mail earthtalk@emagazine.com

Dear EarthTalk: I heard of a practice called cyanide fishing, which is used mostly to collect aquarium specimens, but I understand it is also used to catch fish we eat. Isn’t this very unhealthy?
-- Phil Seymour, Albany, N.Y.

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Cyanide fishing, whereby divers crush cyanide tablets into plastic squirt bottles of sea water and puff the solution to stun and capture live coral reef fish, is widely practiced throughout Southeast Asia despite being illegal in most countries of the region. The practice began in the 1960s in the Philippines as a way to capture live reef fish for sale primarily to European and North American aquarium owners—a market now worth some $200 million a year.

But today the technique is also used to supply specialty restaurants in Hong Kong and other large Asian cities. There high roller customers can choose which live fish they want prepared on the spot for their dinner at a cost of up to $300 per plate in what the non-profit World Resources Institute (WRI) calls “an essential status symbol for major celebrations and business occasions.” WRI adds that as the East Asian economy has boomed in recent decades, live reef food fish has become a trade worth $1 billion annually.

Of course, the cyanide itself is no good for the fish that ingest it. Internet chat boards are rife with comments about cyanide-caught aquarium fish developing cancer within a year of being purchased. And many aquarium owners are willing to pay a premium for “net-caught” ornamental fish as they have a longer life expectancy.

But perhaps the greater damage inflicted by cyanide fishing is to the coral reefs where it is employed, as cyanide kills the reefs and also many of the life forms that rely on them. Researchers estimate that more than a million kilograms of cyanide have been squirted onto Philippine reefs alone over the last half century. These days the practice is much more widespread, with some of the world’s most productive reefs being decimated.

“Despite the fact that cyanide fishing is nominally illegal in virtually all Indo-Pacific countries, the high premium paid for live reef fish, weak enforcement capacities, and frequent corruption have spread the use of the poison across the entire region—home o the vast majority of the planet’s coral reefs,” reports WRI. “As stocks in one country are depleted, the trade moves on to new frontiers, and cyanide fishing is now confirmed or suspected in countries stretching from the central Pacific to the shores of East Africa. Sadly, the most pristine reefs, far from the usual threats of sedimentation, coral mining and coastal development, are the primary target for cyanide fishing operations.”

While there is not much evidence of cyanide-caught fish poisoning the people who eat it—the dose retained by a fish after being puffed is relatively small—the risk nevertheless remains, especially for those who ingest a lot of it. Nausea and gastritis are the typical symptoms of cyanide poisoning, and of course larger doses can cause death. WRI estimates that some 20 percent of the live fish for sale at markets across Southeast Asia are caught using cyanide. Children, the elderly and pregnant women should be especially careful to avoid cyanide-caught fish.

CONTACT: World Resources Institute, www.wri.org.

Dear EarthTalk: I don’t hear much about the environmental impacts of our consumer culture any more, but it seems to me that our “buy, buy, buy” mentality is a major contributor to our overuse of energy and resources. Are any organizations addressing this issue today?
-– M. Oakes, Miami, Fla.

There is no doubt true that our overly consumerist culture is contributing to our addiction to oil and other natural resources and the pollution of the planet and its atmosphere.

Unfortunately the tendency to acquire and even horde valuable goods may be coded into our DNA. Researchers contend that humans are subconsciously driven by an impulse for survival, domination and expansion which finds expression in the idea that economic growth will solve all individual and worldly ills. Advertising plays on those impulses, turning material items into objects of great desire imparting intelligence, status and success.

William Rees of the University of British Columbia reports that human society is in a “global overshoot,” consuming 30 percent more material than is sustainable from the world’s resources. He adds that 85 countries are exceeding their domestic “bio-capacities” and compensate for their lack of local material by depleting the stocks of other countries.

Of course, every one of us can do our part by limiting our purchases to only what we need and to make responsible choices when we do buy something. But those who might need a little inspiration to get started should look to the Adbusters Media Foundation, a self-described “global network of artists, activists, writers, pranksters, students, educators and entrepreneurs who want to advance the new social activist movement of the information age.”

Among the foundation’s most successful campaigns is Buy Nothing Day, an international day of protest typically “celebrated” the Friday after Thanksgiving in North America (so-called Black Friday, one of the year’s busiest shopping days) and the following Saturday in some 60 other countries. The idea is that for one day a year we commit to not purchase anything, and to help spread the anti-consumerist message to anyone who will listen, with the hope of inspiring people to consume less and generate less waste the other 364 days of the year. The first Buy Nothing Day took place in Vancouver, British Columbia in 1992 with a few dozen participants, but today hundreds of thousands of people all over the world take part.

In recent years some anti-consumerists have added Buy Nothing Christmas to their agendas as well. Some ideas for how to leverage Buy Nothing Christmas sentiment without looking too much like Scrooge include giving friends and family “gift exemption” cards and asking shoppers in line at a big box store, “What would Jesus buy?”

Beyond Buy Nothing Day and Buy Nothing Christmas, the Adbusters Media Foundation stokes the fire of anti-consumerism throughout the year via its bi-monthly publication, Adbusters, an ad-free magazine with an international circulation topping 120,000. Do yourself a favor and subscribe...and cancel all those catalogs stuffing up your mailbox in the meantime.

CONTACTS: Adbusters, www.adbusters.org; Buy Nothing Day, www.adbusters.org/campaigns/bnd.

Dear EarthTalk: I heard about something called the Green Café Network. What is it and what are they trying to accomplish for the environment?
-- Jane Stevenson, Los Angeles, Calif.

The Green Café Network (GCN), a project of the non-profit Earth Island Institute, seeks to reduce Americans’ environmental impacts by greening the coffeehouse industry and harnessing cafe culture for community environmental awareness. By educating and working with cafe owners and staff, GCN helps network members reduce waste, save energy, conserve water and increase community stewardship. GCN’s 30-plus cafes scattered across Northern California (as well as one in New York City and another in Keshena, Wisconsin) are committed to reducing their carbon footprints, promoting environmental responsibility and generally operating in as sustainable a manner as possible.

The approach of the GCN is to build on the influence of key institutions—neighborhood cafes and Americans’ infatuation with coffee—to try to raise environmental awareness and spur individual action. The idea is that when people see their local café as a positive example of green business practices and community building, there is a ripple effect, and the community is strengthened accordingly.

For cafes interested in getting involved, GCN provides personalized consulting services to help owners reduce their ecological footprints, enhance and streamline their operations, and set a visible good example of environmental responsibility for the community at large. Services can address specific areas in need of attention, such as energy and water conservation, waste reduction, toxics minimization and eco-friendly purchasing, and also overall efforts to green the business from top to bottom. GCN can also consult on green building issues in the design, construction and remodel phases of a cafe’s lifecycle. With a project tagline of “Love Our Planet a Latte,” how could one not love what GCN is doing?

Cafes and coffee shops can take steps to align environmental considerations with business operations even without membership in GCN. The Barista Exchange website, for one, offers a treasure trove of information and tips on greening up cafes and coffee shops through energy and waste reduction, eco-friendly procurement and the sourcing of organic fair trade coffee. U.S. coffee shops serve up about 25 million cups every day, so coffee shops can make a huge difference by being green.

For its part, the nation’s leading coffee retailer, Starbucks, has been a pioneer in greening the coffee industry, and the company considers environmental stewardship a priority. With dedicated programs for increasing recycling, conserving energy and water, sourcing greener beans, using sustainable building techniques and materials in new stores, and offsetting carbon emissions, Starbucks has worked hard to set a green example.

Of course, cafe owners and staff aren’t the only ones responsible for greening your coffee habit. You can play a role too. One obvious place to start is to bring in your own reusable mug to fill up on your favorite blend to cut down on paper cup waste. And requesting fair trade coffee will help ensure living wages for coffee workers out in the fields and send a message to café owners that you value doing the right thing.

CONTACTS: Green Cafe Network, www.earthisland.org/index.php/projects/grn; Barista Exchange, www.baristaexchange.com; Starbucks Environmental Stewardship, www.starbucks.com/responsibility/environment.

Dear EarthTalk: As I understand it, “Debt-for-Nature Swaps” are arrangements by which countries can erase debt by preserving land. Are any being done today?
-- Bill Hunt, Topeka, Kan.

The debt-for-nature swap concept, whereby a portion of a developing nation’s foreign debt is forgiven in exchange for local investments in environmental conservation measures, dates back to the mid-1980s when Thomas Lovejoy of the non-profit World Wildlife Fund (WWF) first proposed it as a way to deal with the problems of developing nations’ indebtedness and the negative consequences for their natural resources and diverse environments.

The theory goes that if a country with, say, valuable tropical rainforests, is up to its ears in debt, it will sell off or otherwise deplete those natural resources, instead of protecting or conserving them, in order to raise the money needed to pay off its debts. Debt-for-nature swaps can therefore be useful financial mechanisms for helping countries reduce debt without destroying their most valuable natural resources.

Since the first swap was brokered with Bolivia (to protect its Beni Biosphere Reserve and adjacent areas) by the non-profit Conservation International in 1987, many national governments and conservation groups have engaged in similar types of debt-for-nature swap negotiations, especially in tropical countries which contain diverse and threatened species of flora and fauna. Costa Rica has exchanged tens of millions of dollars in debt to protect some of its most pristine and biologically productive rainforests.

In 1998 the U.S. government passed the Tropical Forest Conservation Act to codify debt-for-nature swaps, including formally welcoming non-profit groups like Conservation International, the Nature Conservancy, WWF and others to help arrange the deals and oversee implementation of local initiatives. A 2010 Congressional Research Service report found that since 1987, debt-for-nature swaps have channeled upwards of $1 billion toward tropical forest conservation initiatives instead of back into creditor nations’ coffers.

But far fewer deals are occurring today for a number of reasons. For one, says the Congressional Research Service, other agreements for debt restructuring and cancellation have reduced developing nations’ debt by significantly more than debt-for-nature swaps can. Another is that the concept has fallen somewhat out of favor. Some experts argue that the financial benefits are overstated, that funds are misdirected to less needy countries, that external debt is not a primary driver of deforestation and other environmental ills, and that funding does not necessarily equate to effective implementation of conservation strategies.

Criticism aside, some deals are still getting done. In 2008, France forgave $20 million in debt owed by Madagascar to help the biodiversity-rich nation triple the size of its protected areas to better protect its native flora and fauna. In 2010, the U.S. forgave $21 million in Brazilian debt to fund several ecosystem protection initiatives in Brazil’s still vanishing tropical rainforests. The U.S. has also forgiven debt from the Philippines, Guatemala and Peru in recent years in exchange for on-the-ground conservation efforts. Germany and the Netherlands have each forgiven some of their foreign debt to tropical nations for forest protection as well. So while debt-for-nature swaps are not as popular as they once were, they are still a key tool in the toolbox of environmentalists looking to promote conservation in tropical countries.

CONTACTS: WWF, www.wwf.org; Conservation International, www.conservation.org
The Nature Conservancy, www.nature.org.

Dear EarthTalk: I’ve been hearing more and more references to the need to clean up our agricultural practices for reasons pertaining to health, food quality, even global warming. What are the major environmental issues today associated with agriculture?
-- Tony Grayson, Newark, N.J.

What amazes many environmental advocates to this day is how the widespread adoption of synthetic chemical pesticides, herbicides and fertilizers for use in agriculture was dubbed the “Green Revolution,” when in fact this post-World War II paradigm shift in the way we produce food has wreaked untold havoc on the environment, food quality and human health.

Agricultural output has certainly increased as a result of these changes, but with the vast majority of the world’s farms now relying on petroleum-derived synthetic chemicals to grow crops and petroleum-derived fuels to drive the engines of production—modern agriculture has become overwhelmingly toxic to the atmosphere and is hastening global warming. The Intergovernmental Panel on Climate Change (IPCC) reports that agricultural land use contributes 12 percent of global greenhouse gas emissions; here in the U.S. almost 20 percent of our carbon dioxide emissions come from agricultural sources.

Intensive use of chemicals isn’t good for our nutrition intake, either. Overworked, depleted agricultural soils generate fruits and vegetables with fewer nutrients and minerals than those produced by farmers decades ago. And much of the food we eat is laced with chemicals that end up in our bloodstreams.

Beyond its effect on the food we put in our bodies, modern agriculture generates large amounts of nitrogen, phosphorous and other fertilizers running off into our streams, rivers and oceans, compromising not only the quality of our drinking water and the health of riparian ecosystems, but also causing those huge oxygen-depleted ocean dead zones we hear about in coastal areas such as the Gulf of Mexico.

Yet another issue with modern farming is the amount of animal waste generated and concentrated in small areas, which creates unsanitary and potentially dangerous conditions for the animals and humans alike. And the widespread use of antibiotics on farm animals to keep disease in check results in the development of stronger strains of bacteria that resist the antibiotics used by humans to ward off infection and sickness.

Also, many worry about the potential impacts of the widespread use of genetic engineering, whereby genes in plants, animals and microorganisms are manipulated to select for specific traits. These genetically modified organisms, reports Greenpeace, “can spread through nature and interbreed with natural organisms,” thus contaminating the natural environment in unforeseeable and uncontrollable ways.

The good news is that rapidly increasing consumer demand for healthier food is forcing agribusiness to see the wisdom of moving away from business-as-usual. Organic farming, which eschews chemical fertilizers and pesticides in favor of more natural choices, holds considerable promise for greening up our agricultural systems. According to the U.S. Department of Agriculture, organic cropland acreage averaged 15 percent increases between 2002 and 2008, although certified organic cropland and pasture accounted for only about 0.6 percent of U.S. total farmland in 2008. So we still have along way to go.

CONTACTS: IPCC, www.ipcc.ch; USDA, www.ers.usda.gov/Data/Organic.

Dear EarthTalk: Why can’t plastics of all types, instead of being initially sorted, simply be melted together to be separated later? It must be a monumental and error-prone task to separate truckloads of plastics.
-- L. Schand, via e-mail

The reason plastics aren’t typically melted together and then separated later is a matter of both physics and economics. When any of the seven common types of plastic resins are melted together, they tend to separate and then set in layers. The resulting blended plastic is structurally weak and difficult to manipulate. While the layered plastic could in theory be melted again and separated into its constituent resins, the energy inputs required to do so would make such a process cost prohibitive.

As a result, recycling facilities sort their plastics first and then melt them down only with other items made of the same type of resin. While this process is labor-intensive, the recycling numbers on the bottom of many plastic items make for quicker sorting. Many recycling operations are not only reducing sizable amounts of waste from going into landfills but are also profitable if managed correctly.

Manufacturers of plastic items choose specific resins for different applications. Recycling like items together means the reclaimed polymer can be used to create new items just like their virgin plastic forebears. The seven common types of plastic are: #1 Polyethylene terephthalate (PET or PETE); #2 High-density polyethylene (HDPE); #3 Polyvinyl chloride (PVC); #4 Low-density polyethylene (LDPE); #5 Polypropylene (PP); #6 Polystyrene (PS); and #7 Other/Mixed (O). One complicating factor is trying to recycle unmarked plastics and those embossed with a #7 (representing mixed resins, also known as polycarbonate). According to Earth911, a leading online source for finding recyclers for specific types of items across the United States, in some cases #7 plastics can be “down-cycled” into non-renewable resin; in other cases recycling operations just send their unmarked and #7 plastics into local landfills.

But even though recycling operations have developed relatively efficient systems for generating reclaimed resins, many environmentalists recommend that consumers still avoid plastics as much as possible. “Simply recycling these products does not negate the environmental damage done when the resource is extracted or when the product is manufactured,” reports EcoCycle, a Colorado-based non-profit recycler with an international reputation as an innovator in resource conservation. The group adds that over the past half century, the use of disposable packaging—especially plastic—has increased by more than 10,000 percent.

Along these lines, products (or packaging) made out of reusable metal, glass or even wood are preferable to equivalent items made from plastic. For starters, an item of metal, glass or wood can be re-used by someone else or recycled much more efficiently than plastic when it does reach the end of its useful life to you. Wood products and other items crafted out of plant material—even so-called “polylactic acid (PLA) plastic” made from plant-based agricultural wastes—can be composted along with your yard waste and food scraps, either in your backyard or, if your town or city offers it, through your municipal collection system. Happy reducing, reusing and recycling!

CONTACTS: Earth911, www.earth911.com; EcoCycle, www.ecocycle.org.

Dear EarthTalk: Why don’t we reprocess and re-use our nuclear waste like France does? Would it be possible for us to start doing so?
-- Albert Jukowsky, Silver Spring, Md.

Reprocessing nuclear waste to extract more energy from it, while expensive and controversial, is indeed to this day still practiced in France, the UK, Russia, India and Japan—but not in the United States, where it was invented. The process involves breaking down spent nuclear fuel chemically and recovering fissionable material for use in new fuels. Proponents tout the benefit of reducing the amount of nuclear waste, resulting in less highly radioactive material that needs to be stored safely.

Nuclear reprocessing was first developed in the U.S. as part of the World War II-era Manhattan Project to create the first atomic bomb. After the war, the embryonic nuclear power industry began work to reprocess its waste on a large scale to extend the useful life of uranium, a scarce resource at the time. But commercial reprocessing attempts faltered due to technical, economic and regulatory problems. Anti-nuclear sentiment and the fear of nuclear proliferation in the 1970s led President Jimmy Carter to terminate federal support for further development of commercial reprocessing. The military did continue to reprocess nuclear waste for defense purposes, though, until the collapse of the Soviet Union and the end of the Cold War made continuous ramping up of our nuclear arsenal unnecessary.

More recently, George W. Bush pushed a plan, the Global Nuclear Energy Project (GNEP), to promote the use of nuclear power and subsidize the development of a new generation of “proliferation-resistant” nuclear reprocessing technologies that could be rolled out to the commercial nuclear energy sector. Federal scientists came up with promising spins on reprocessing nuclear fuel while minimizing the resulting waste. But in June of 2009 the Obama administration cancelled GNEP, citing cost concerns.

Proponents of nuclear power—and of reprocessing in particular—were far from pleased with GNEP’s axing, especially in light of Obama’s earlier decision to close Yucca Mountain as the U.S.’s future nuclear waste repository. “GNEP may have gone away, but the need to recycle spent fuel in this country is more important than ever because of the government’s stupid decision to close Yucca Mountain,” said Danny Black of the Southern Carolina Alliance, a regional economic development group, on the Ecopolitology blog. “Without Yucca Mountain, the pressure is on the industry to do more with recycling.”

But a 2007 report by the nonprofit Institute for Energy and Environmental Research (IEER) would seem to justify Obama’s decision. IEER found that nuclear reprocessing would actually increase our volume of nuclear waste six fold. IEER also reported that France, which runs the world’s most efficient reprocessing operation, spends about two cents per kilowatt hour more for electricity generated from reprocessed nuclear fuel compared to that generated from fresh fuel. IEEE further reports that the costs to build the breeder plants needed to convert spent nukes into usable fuel would “create intolerable costs and risks.”

For now, U.S. nuclear plants will continue to store waste on site, with spent rods cooled in pools of water for upwards of a year and then moved into thick steel and concrete caskets. While proliferation and terrorism have long been risks associated with hosting nuclear plants on American soil, recent events in Japan underscores that even Mother Nature poses a threat. As such, advocates of reprocessing probably stand little chance of reviving plans in a political climate now so hostile to nuclear development.

CONTACTS
: Ecopolitology, www.ecopolitology.org; IEER, www.ieer.org.

Dear EarthTalk: I understand that fast-food giant YUM! Brands, owner of KFC, is under fire by Greenpeace and others for rainforest destruction. What’s the story?
-- Betsy Barnard, Wellesley, Mass.

YUM! Brands, which operates 38,000 fast food restaurants in 110 countries (including not only KFC but also Pizza Hut, Taco Bell, WingStreet, A&W and Long John Silver’s), has come under fire of late from Greenpeace and other rainforest advocacy groups for sourcing palm oil, paper and other goods from suppliers notorious for destroying tropical rainforests in Indonesia and elsewhere. While McDonald’s and Burger King have worked in recent years to cut their ties with palm oil and logging companies linked to rainforest destruction, YUM! continues to ignore calls to source their resources more responsibly.

Indonesia’s tropical rainforests are home to orangutans, tigers, elephants, clouded leopards and dozens of other endangered plants and animals. Environmentalists report that 40 percent of Indonesia’s rainforests have been logged over in the last half-century, mostly to clear the way for palm oil plantations. The cleared timber is sold at huge profits for paper and pulp, while the palm oil brings in continuous revenue for multinational corporations despite denuding lands once rich in biodiversity.

Tropical rainforests also sequester significant amounts of carbon dioxide (CO2) in their growing woody biomass; chopping them down only accelerates the rate of global warming by allowing more CO2 to escape into the atmosphere where it contributes to the greenhouse effect. Despite a partial moratorium on rainforest destruction announced by the Indonesian government in May 2011, analysts believe that nearly half of the country’s remaining tropical rainforests will be cleared within two decades.

Over-exploitation of natural resources—and deforestation in particular—is a huge obstacle to Indonesia’s growth. According to the Rajawali Institute for Asia at the Harvard Kennedy School of Government, by eliminating its natural capital for negligible gains, Indonesia lost $150 billion in future revenues between 1990 and 2007, wiping out one-third of the country’s national savings in the process.

There are “major economic risks for Southeast Asia’s agriculture and timber sectors if they don’t take prompt action to conserve their forests,” reports Glenn Hurowitz, senior fellow at the Center for International Policy. “Global consumers are increasingly demanding deforestation-free products,” he says, adding that Nestle, McDonald’s, Unilever and others have pledged to obtain their palm oil from sources certified “sustainable” by the Roundtable on Sustainable Palm Oil.

YUM! Brands is not the only offender. Greenpeace has also targeted Mattel toys for supporting suppliers that contribute to Indonesian deforestation. And two Michigan girl scouts were shocked to find out the cookies they were selling contained palm oil obtained from deforested land in Indonesia. They spread the word to fellow girl scouts across the country, thousands of whom have stopped selling cookies as a result.

Concerned consumers should write the company a letter asking them to stop using products derived from deforested rainforest lands. Greenpeace makes it easy by hosting an online form letter that sympathizers can sign onto and the group will take care of delivering your message directly to YUM! executives.

CONTACTS: YUM! Brands, www.yum.com; Center for International Policy, www.ciponline.org; Roundtable on Sustainable Palm Oil, www.rspo.org; Greenpeace Form Letter to YUM!, https://secure3.convio.net/gpeace/site/Advocacy?cmd=display&page=UserAction&id=689.

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