Showing posts with label carbon emissions. Show all posts
Showing posts with label carbon emissions. Show all posts

Monday, February 18, 2008

The Myth of Biofuels.

"We cannot afford to ignore the consequences of converting land for biofuels. Doing so means we might unintentionally promote fuel alternatives that are worse than fossil fuels they are designed to replace." - Joe Fargione, The Nature Conservancy

Are biofuels all that they are made out to be - a silver bullet, a panacea for reducing carbon emissions and mitigating the effects of climate change?

Biofuels - made from the processing of food crops like corn, soybeans and palm oil - have been embraced widely as an essential solution to global warming and are viewed favorably as better than fossil fuels because the carbon released when they are burned are balance by a comparable amount of carbon that the plants absorbed when they grew.
Oilseed plantation
But this basis for adopting biofuels, as an alternative to fossil fuels, to reduce carbon emissions is fundamentally flawed as it does not takes into account the carbon emitted by the process of turning plants into fuels, especially from the conversion of land for growing biofuel crops.

Two recent studies published in the journal Science have, in fact, indicated that the rush to grow crops for biofuels have actually increased greenhouse gas emissions rather than reducing it. "Any biofuel that uses productive land is going to create more greenhouse gas emissions than it saves," said Timothy Searchinger of Princeton University, a lead author of one of the studies.

Called by some environmentalists as the "deforestation fuel", huge amount of natural land are currently being converted to meet the global demand for biofuels like ethanol and biodiesel, and the clearance of forests and grasslands releases vast amounts of carbon - far more than the carbon spared by burning biofuels instead of petrol.

Research by the Nature Conservancy estimated that the clearing of grasslands and forests for biofuel plantations releases 93 times the amount of greenhouse gases that would be saved by the fuel made annually on that land. "So, for the next 93 years, you are making climate change worse, just at the time when we need to be bringing down carbon emissions," said Joseph Fargione, of the Nature Conservancy.
Biofuel harvesting
Even using existing farmland to grow biofuel crops instead of food crops, increases greenhouse gas emissions because food production would simply be shifted to other parts of the world, resulting in the destruction of more forests and grasslands to make way for agriculture. And as all biofuel agriculture causes habitats destruction, it further exacerbates the massive loss of natural ecosystems and biodiversity in recent years.

With global production of ethanol almost doubling between 2000 and 2005 and biodiesel output quadrupling to meet the rising demand for biofuels, especially in Europe, much of the biofuels come from Brazil where pristine forests in the Amazon are being burned to plant more sugar and soybeans, and also from South East Asia, especially Indonesia, where rainforests are cleared to make way for oil palm plantations, destroying the habitats of many species like the orangutans. Species are actually dying for our driving.

The rush to embrace biofuels has also contributed to the recent worldwide increases in food prices especially grains, sugar and vegetable oil, and prices are expected to rise even further as farmers shift their emphasis from food crops to biofuel crops to cash in on the demand.

While biofuels does have a part to play in our efforts to reduce carbon emissions, it can only be as part of an overall strategy that must include reducing energy usage, improving fuel efficiency in production and transport, and a diversity of sustainable energy resources.

It is frightening that something so well-intentioned can turn out to be damaging to our environment instead and there is now an urgent need to turn attention towards producing biofuels that do not require cropping such as waste from agriculture and forest lands, and woody biomass grown on marginal lands unsuitable for crop production, as they do not require the conversion of land.

*Sources
- Science journal
- IPPC, United Nations
- The Nature Conservancy
- World Conservation Union
- U.S. Environmental Protection Agency

*Related posts :
- Man & The Loss Of Biodiversity
- Deforestation - How The World Is Losing Its Cool
- Burps, Flatulence & A Killer Warming Gas


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Saturday, December 29, 2007

Global Problem, Local Solutions

"If we want to tackle climate change, we have to be local. Our aim is for the cities to push the governments to act on climate change." - Pedro Ballesteros Torres, manager of the European Commission's Sustainable Energy Europe campaign.

With the inability of governments around the world to take immediate and concrete actions to reduce greenhouse gases emissions, many cities, towns and even villages across Europe are forging ahead with their own initiatives to cut carbon emissions and mitigate the effects of climate change and global warming.

From Vaxjo, in southern Sweden, to major cities like London, Munich and Paris, Europeans are taking the lead and using novel ways to reduce their carbon footprints, with some of them achieving emission cuts that exceeded those prescribed by the Kyoto Protocol. Here are some heartwarming examples of what an environment-conscious citizenry can achieved :
Woodchip fuel, Vaxjo
Vaxjo, Sweden
This southern city of 78,000 in Sweden, which aims to be completely free of fossil fuels eventually, has been using leftover products from forestry industry and sawmills, namely fir and pine chips, to generate electricity. Its centralised "district heating system", running on the low-emitting woodchip fuel, provides about 90 per cent of local heating needs. Ashes from the process are also brought back to fertilize the forest.

With emissions from cars being a major contributor to carbon dioxide levels in our atmosphere, Vaxjo has also been encouraging its citizens to use bicycles as the main mode of transport. Snow is cleared from the cycle paths before roads and its bicycle network has also been expanded. So successful has been its efforts that Vaxjo has managed to cut greenhouse gases emissions by 30 per cent since 1996 and is confident it can get a 50 per cent cut by 2010. Visitors from all over the world also come to see what can be done on a local level.

Photo-voltaic panels, Woking
Woking, England
An early pioneer in adopting environmental-friendly practices, this town south of London has gained a reputation as Britain's greenest city. With its solar-powered street lights, photo-voltaic panels and energy-efficient power generators, it has managed to cut carbon emissions by about 20 per cent since 1990. Enterprising solutions like installing photo-voltaic panels on top of glass-roofed structures along its roads, generates more than 50,000Kwh of energy every year and reduces carbon dioxide emissions by more than 40 tonnes annually. Thanks to its alternative energy supplies, parts of Woking will remain lit even if the national energy grid were to go down.

Gussing, Austria
This tiny town in Austria is the first community in the European Union to cut carbon emissions by more than 90 percent since 1995. Using a technology that produces natural gas from scrap lumber, which is use to drive the town's power plants, Gussing generates about 22 megawatt hours of power a year, more than enough to meet its energy needs and sells the surplus of 8 megawatt hours to the national grid.

Big signs of "Eco-Energy Land" greet visitors to the town and its alternative and renewable energy movements have spawned an entire "eco" industry with many companies producing power, heat and fuels from sawdust, corn, cooking oil and creating more than 1,000 jobs. So determined is this tiny outpost in Austria in seeking alternative energy that it is now embarking on a major project to harness the power of the sun through a 50 million euros plant built by Solon AG Fuer Solartechnik of Germany, which is scheduled to begin operation next year.
"Velib" bicycle scheme, Paris
Cities
Major metropolises in Europe are also doing their part in reducing their carbon footprints. In Barcelona, through its Solar Thermal Ordinance, all new and renovated buildings are required to be fitted with solar panels to generate at least 60 per cent of the energy needed for hot water production while in Munich, old buildings are been refurbished to tackle energy wastage through poor insulation.

The Europeans are also tackling the fastest-growing source of carbon-emissions in cities : transport. Paris has its "Velib" free bicycle rental scheme, a self-service bicycle-hire scheme that is available round the clock to encourage people to cut down usage of cars. Similar bicycle schemes can also be found in Copenhagen, Helsinki and Brussels. In London, its much-admired congestion charge has tremendously cut down weekday traffic through the city centre. And through the Climate Alliance of European Cities, a grouping of more than 1,400 cities and municipalities across Europe, the Europeans have also set the ambitious target of cutting carbon emissions by 10 per cent every five years.

Cities covers just 1 per cent of the earth's surface but are home to more than half the world's population. They consume about 75 per cent of global energy and are responsible for 80 per cent of the world's greenhouse gases emissions. As a result, it is cities that have an important role to play in mitigating the effects of climate change and it is also in cities that climate and sustainability solutions are to be found.

The actions by the Europeans are definitive and shining examples of what the local populace can do and achieve in the battle against global warming, proving that it does not need international agreements like the Kyoto Protocol or the recently ended contentious Bali Climate Talks to come to grips with climate change.

*Sources :
- The Nature Conservancy
- Climate Alliance of European Cities
- Sustainable Energy Europe Campaign, European Commission
- Carbon Dioxide Information Analysis Center, United Nations

*Related posts :
- A Planet In Peril
- From Ice To Water
- The Kyoto Song And The Bali Dance


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Saturday, December 15, 2007

Bali Climate Talks - A Nation Who Lost The Plot.

"....So, I am going to speak an inconvenient truth. My own country, the United States, is principally responsible for obstructing progress here in Bali," - Former US Vice-President Al Gore.

Having followed the progress of the Bali Climate Talks and waiting in anticipation for the outcome, I was compelled to ditch today's post on deforestation around the world in favour of a piece on the divisive behaviour of some nations, especially the United States, in the Bali Talks.

Exasperated and disgusted are understatements of how I felt. What's with the moral police and champion of democracy of the world? So quick on the draw with Iraq and Afghanistan and condemnation of human rights abuses around the world, but seemingly myopic, almost blind to the urgent task at hand to come up with a coherent agenda to tackle global warming. The behaviour of the United States at the Bali Talks seems like a nation with a leader who is morally bankrupt.

A recent headline by Associated Press : "US obstructing progress of talks, says Gore," spoke volumes of a nation who have both the ability and resources, but most importantly, a moral responsibility, by being the world's largest emitter of carbon emissions, to take on a leadership role in pressing for a solution to global warming but instead, chooses not to do so.

The moral responsibility and need for the United States to take decisive actions to curb carbon emissions cannot be overstated. Recent statistics released by the Washington-based National Environmental Trust, showed that 42 US states individually emitted more carbon dioxide per year than 50 developing countries combined and 3 states individually emitted more CO2 than 100 developing countries. The US President home state of Texas, with just 24 million people, emits 696 million tonnes of CO2 per year, much more than Britain, whose 60 million people emit 578 million tonnes annually.

It is one thing not to ratify the Kyoto Protocol (which is already bad enough), but to throw spanners in the works at every opportunity, adopting a divisive stance and creating dissension among nations in an attempt to derail the Bali Talks smacks of the behaviour of an over-sized bully out of control. From opposing mandatory carbon emission caps, going off in a different direction with its unilateral decision to have its own climate change talks to the constant proposing of amendments, even at the end of negotiations, the United States arrived at the Bali Talks without any intention of working with the rest of the world in forging a common consensus. Not only was the EU at odds with the US position, but all the members of the G77 developing countries, including China, found US demands that all countries be treated the same way, illogically and unacceptable.

While the United States is not the only country that opposed mandatory carbon dioxide emission caps, the Bali Climate Talks - already saddled with a whole range of contentious issues to deal with, from equity, worries of slowing of economic growth to calculation of carbon emissions caps by per capita basis or by per volume basis between developed and developing nations - certainly can do without the needless posturing of the United States. A statement by the delegate from Papua New Guinea, Kevin Conrad, aptly summed up the general feelings about the behaviour of the United States : "If you are not willing to lead, then get out of the way!" - a position that i had adopted and thought was necessary in order to achieve a modicum of progress in the Bali talks in my previous post - The Kyoto Song And The Bali Dance.

Well, the Bali Climate Talks are now over and the United States should be patting themselves on the back, as the outcome was a compromised piece of watered-down "Bali Road Map", with no mandatory and binding carbon emissions capping, but 2 more years of further negotiations leading to a new accord to replace the Kyoto Protocol by 2009. The original goal of the Bali Climate Talks to cut industrialised nations' carbon emissions by between 25 per cent to 40 per cent below 1990 levels by 2020 was eliminated and relegated to a footnote, replaced by vague goals like "....developed countries should take the lead in driving cuts in emissions of planet-warming greenhouse gases," and "....developing nations should consider measurable and reportable national mitigation actions." More talks, more song and dance.

While I am not totally surprised by the failure of the Bali Talks to come up with concrete and decisive actions to deal with global warming, considering the complexity of the talks as the threat of climate change cuts across all aspects of our life and challenges the very structure and system that our current societies are built on, what actually surprised me was the continual faux pax that the guy in the White House, with that funny-sounding plant name, keeps doing in recent years, from the fiasco in Iraq to his handling of the sub-prime mortgage crisis in US.

With the latest "performance" by the United States at the Bali Talks, I doubt he can look at his children and children's children eyes and say he did what was best for the only home we will ever have. My children will certainly say he did not.

*Related articles :
- Climate Talks Near End Amid Row - BBC News
- Al Gore Lays Blame Of Bali Stalemate On US - Reuters
- The Kyoto Song And The Bali Dance



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