Welcome to the blog of the Broad Curriculum course Living Sustainably: A complete guide to surviving a changing planet. This course is run by Professor Nick Gray of the Centre for the Environment at Trinity College Dublin.

Saturday, May 18, 2013

Controlling Wildfires – Sustainable for Who?

When people speak of sustainability they speak with the idea of creating a planet resourceful for all species, not just man. The human race will probably admit to being the leading cause of the disruption of sustainability so it’s fair that we also take responsibility to try repair it, not just for us but for all other organisms that inhabit earth. But what inspired me to write about this particular topic was that man is also trying to repair the disruption caused by other sources on the planet.

So what are the main disruptors of sustainability? Overpopulation, destruction of forests, burning of fossil fuels… all caused by man mainly. As a result of all these and many more, there is too much carbon being pumped into our atmosphere causing more disruption.  But we all know that and we are slowly trying to change ourselves to decrease our carbon emissions. Natural sources of carbon emissions however can’t change themselves and we’ve generously decided to also help combat their carbon emissions. But is this an entirely beneficial thing? Is this really sustainable for the entire planet or just us?

Wildfires are thought to cover 3–4 million km2 of the globe each year and are responsible for the release of 2–3 billion tonnes of carbon to the atmosphere based on estimates from previous years. I think everyone can agree that this is bad and due to global temperatures rising, forests are becoming drier and more prone to more frequent and larger fires. But do we really have the right to try stop these natural occurrences?

Despite the billions of tonnes of carbon emissions, wildfires do have their benefits, of which many species take advantage. It is said that fires cause the loss of nutrients through a variety of mechanisms however it has been shown that very high temperatures have to be reached to result in a significant loss and generally these nutrients are replaced by the organic matter left behind after the fire. Fires also remove overhead vegetation resulting in fewer leaves intercepting rain which allows more moisture to reach the soil.

It is also said that fires result in the loss of biodiversity due to the death of species caught in the fires. This has been shown incorrect in many cases. The longleaf pine savannas of the southern states of America depend on fire to prevent the invasion of deciduous forest trees whose shade eliminates both the pines and the species beneath. The diversity and abundance of these species is closely related to fire frequency. Natural fire regimes of the forests of British Columbia are important in maintaining a diverse assemblage of vertebrate species and different species have adapted to exploit the different stages of succession, regrowth and habitat change that occurs following a fire. Fires also cause the habitat to evolve differentially afterwards and influence how vertebrate species are able to use the burned areas. In most grassland ecosystems, fire is the primary mode of decomposition, making it crucial in the recycling of nutrients. There are also many plant species that depend on fires to instigate the germination of their seeds such as the Giant Sequoia.

Fire serves many important functions within fire-adapted ecosystems. Fire plays an important role in nutrient cycling, diversity maintenance and habitat structure. The suppression of fire can lead to unforeseen changes in ecosystems that often adversely affect the plants, animals and humans that depend upon that habitat. So with all that in mind, is controlling wildfires creating sustainability for all or are we just looking at the smaller picture?
  
Alice Kennedy

Tuesday, May 14, 2013

RAIN HARVESTING: HAVE YOU HEARD OF IT YET?


Source: http://kscst.org.in/
Last weekend I had the pleasure of looking out the window to endless hours of rain. It dawned on me that each house in my estate was failing to take advantage of  the potential savings to be made from the water falling from the sky. Out of shear boredom I decided to collect the rainwater in an old oil drum and then a few days later use this water to water the flower beds in the garden with a jerry can. Although it was unnecessary as the garden was saturated from the previous few days of rain, I carried out the task in order to evaluate the practicality of collecting rain water in order to utilise it for mundane water consuming tasks, such as watering the flowers. Not to my surprise, there were ample amounts of water for the plants and even a bit to spare.
This set me thinking of how feasible would it be to construct a water collecting unit in my back garden (possibly on the shed roof to take advantage of the forces of gravity), to which one could attach a hose pipe (I believe jerry cans to be a bit out dated) and hey presto you have a free water source. This may seem totally irrelevant at present but when water meters are introduced, and money is leaking from that external back garden tap then we will see the method in the madness.
The idea of collecting rainwater in order to use for mundane tasks extends beyond your mother’s flower bed (or even your own). There is no reason why rainwater can’t be used to wash a car, fill a water balloon or even clean the decking. It is evident that more sustainable methods of consumption (in this case for water consumption) exist all around us, it just requires a little ingenuity and innovation to realise a more practical and sustainable way of life.
When I eventually got around to researching “rain harvesting”, as it turned out to be called, I discovered that there already exists numerous companies providing such services (below are links to some of their websites). However, such companies appear to be under the radar with regards to public interests. No doubt this will change with some clever marketing post the introduction of water meters to Irish households in the near future.
To give some gravitas to my argument, the following quote taken from the Irish Water Treatment Association’s website, highlights, in my view, the necessity and complete feasibility of rain harvesting in Ireland;
‘Much of the water we use doesn't need to be of drinking quality. In fact studies show that 55 per cent of domestic treated water could be substituted for rainwater while 85 per cent of water used for commerce and industry does not need to be of drinking standard’.

It makes all the sense in the world, right? Even the ancients were at it!
Darren Morrell 
Some rain harvesting companies:


Friday, May 10, 2013

Reduce your carbon Paw print: Tips for greening up your pet


I can be green too!

In 2009, a couple from New Zealand, Robert and Brenda Vale, wrote a book called ‘Time to Eat the Dog?’ in which they discussed the devastating effect that being careless with how you care for you pet can have on the environment.  According to the book, the carbon paw print of a pet dog is double that of your standard SUV, making man's best friend the environment's worst enemy. Other pets targeted were hamsters, which were compared to a plasma television, and goldfish, which actually burn energy equivalent to two cell phones. With a few small changes to how you care for your animals, you can help reduce your carbon footprint by reducing their carbon paw print.

1: Adopt Pets
There are plenty of lovely pets just waiting in animal shelters to find new homes. As well as doing good, by adopting you are also reducing the demand for pets from mills, which have large carbon footprints due to their use of low-grade food (the production of which has high carbon emissions).
2: Recycle and Reuse
Lend a helping hand. Instead of binning your old toys, beds and accessories when your pet grows out of them (or just tired of them), drop them up to your local pet shelter. Not only is this better for the environment but you will also be helping out very worthy charities. You could also swap old pet accessories among your neighbours or friends who are also pet owners.
3: Pick up Waste
Instead of using plastic bags to pick up your dog waste, opt for biodegradable bags that break down in about a month – a lot better than the 1500 years it takes plastic to degrade. If you have cats, think about switching to an organic, plant-based litter.
4: Walk to Walks
Why drive your dog around to bring them for a walk? Look for parks and open spaces nearer to your house to reduce emissions. If you need to drive, try to carpool with other dog owners.
5: Buy them Green Goods
These days, eco-friendly pet accessories are everywhere. When buying your pets toys, look for toys made from recycled materials or sustainable fibres such as hemp. You can also buy hemp collars and leads, which are much better than the more common plastic or leather. You can also get beds made from organic materials or recycled PET bottles. Failing this, use old towels or cushions to make your own eco-friendly pet bed.
6: Be Careful about Food
When buying pet food, opt for higher-quality foods, which have used sustainable methods and are conscious of their carbon footprint when producing it. Take the time to read the labels on all pet food packaging, and look for foods that do not contain synthetic ingredients or chemically altered natural ingredients. Buy chicken and rabbit flavours over beef, which will also lower your pet’s carbon paw print. As well as this, try your hand at using up scraps of old food and vegetables to make your own dog treats. You’ll save money and also reduce your waste by using up odds and ends and not having excess packaging from store-bought goods. When you are buying pet food, buy in bulk to reduce the packaging.
Ailbhe Smith

Monday, May 6, 2013

The 21st century, The age of expiration!

I-phones, I-pads, MRI scanners, solar panels, computer chips, superconductors and spacecrafts, if I asked you what do all of these objects have in common what would you say? That they are all examples of technology, the age of science, products that are improving our lives and future? This all may be true but the answer I was looking for was that all of these products may not be around in the next century.
It may seem bizarre that objects that we associate as symbols of the future may not be around in the future. The rare earth metals and gases used to manufacture these products are non-renewable and are only present on earth in finite amounts. Helium which is critical for superconductors, space exploration and medical technology will run out in 25 years. Global hafnium supplies, which are utilised in the manufacturing of the chip in this computer, is predicted to be exhausted by 2017 (yes,it is the year 2013 now!) The screen you may be reading this off may be an LCD screen and if so say goodbye as indium, the main component, will be exhausted by 2020. Zinc...2037, uranium...2090, copper...2100...
It is disheartening, especially to me as a scientist, that the major advances of the past few years in medicine, nano-and micro-technology will probably not be commercially viable to expand on due to the lack of rare metals, that the recent advances in renewable energy such as hybrid batteries, energy-efficient lighting and solar panels will ironically come to a halt as the non-renewable resources used exhaust. But as well as being disheartened, a worry has begun to creep in as I consider how we are beginning to depend on these new technologies. 28% of helium supplies are used to super-cool magnets for MRI scanners. What will happen when this runs out in less than 30 years? Does anyone have a back-up plan?
We claim to be a caring species who are trying to live sustainably so that the future generations, our children and grandchildren, can have the chance to experience the amazing world that we live in today. Unfortunately, they will have to deal with the past generations mistakes, from climate change to ozone layer depletion and its consequences such as higher global levels of cancers and other diseases. These generations will need much greater control over their environments than we do today and therefore, much better technology in order to survive.
We need to claim responsibility, even if industries and governments won’t. Can more efficient goods with longer lives be designed? Is the recreational use of these rare materials acceptable? Awareness needs to be raised now if we have any chance of halting the exploitation and expiration, as I for one could not live with the guilt of knowing that in the future a sick child may die due to a lack of MRI scanners all because we wasted the helium needed to cool these machines in our party balloons!
Ailis O’Carroll

Thursday, May 2, 2013

Maybe creating an army of mini Eco Warriors can help?

Image by Art Revolution
The picture says it all, we talk so much about leaving a better planet to our kids, that we forget about leaving better kids to this planet. With our climate recently becoming more and more unstable, there seems to be a lot of concern and general talk about the environment. Phrases like ‘global warming’ and ‘sustainable resources’ are appearing more frequently in the media, so much so that we no longer take much notice of these articles.
Should we really be paying more attention to these issues though? Becoming desensitised to these common phrases isn’t going to make the problem go away now and it never will. It is our responsibility, whether we wish to acknowledge that fact or not, that this is our planet and what happens to it and its vital resources is down to us. But what can we actually do?
Reduce, reuse, recycle? Yet another common phrase often recited in response to questions about protecting the environment, which has lost its meaning for a lot of us. What about education as an answer? Education never seems to be brought up in relation to protecting our planet. We only end up learning about environmental issues when we already have bad habits in our daily lives. Driving to the shop that’s less than a mile walk away, throwing out plastic bags instead of reusing them or bringing your own bag shopping, leaving the tap running when brushing your teeth or washing up after dinner and buying way too much food in the weekly shopping, thinking that you’ll eat it all. Sound familiar? We all do it. We get to this age, living on this planet, using its resources without care like they’re never going to run out, purely because we have never had cause to worry before and because we didn’t know the bad effects our behaviour can have on the environment. It’s not down to ignorance that a lot of us young people have such environmentally unfriendly habits; it’s down to a lack of proper education around the topic.
Maybe if we had been better educated about the environment and its decreasing resources from when we were little, we would have different habits and different views now, at this age. It wouldn’t be a case of having to try and change how we live; more that we grew up being contentious, saving resources and trying to protect and appreciate the environment around us. I don’t mean to try and turn kids into mini eco warriors; I mean to better educate them earlier about what’s actually going on in the environment. What are the resources we need to be worrying about? Which resources are running out and what are the more sustainable options? Maybe try and make things like recycling and water conservation normal everyday things rather than a bonus, which is how they’re seen now.
Maybe if parents stopped worrying about infections and cuts and bruises and threw their kids outside during the summer to enjoy nature and have fun outdoors rather than letting them stay stuck inside playing with plastic toys and expensive electronics which are causing even more damage to the environment. Maybe if nature actually meant more to us from when we were little, we would be more bothered about getting out and doing something about environmental issues rather than sitting inside reading about and talking about global warming and sustainable resources on our smartphones and laptops.
Katie Smith

Photo reference:
Posted 24th September 2012 by Art Revolution
Labels: Anonymous Art


Tuesday, April 30, 2013

What the Horsemeat Scandal has Taught Us

 I have no problem eating horsemeat, however, what the recent horsemeat scandal has taught us, is that we can no longer take for granted what we are actually eating or where exactly it is coming from. Not only has this investigation raised questions into both the regulation and traceability of the meat industry in Europe, but it has also highlighted what a globalised and mechanised system the modern food industry is.

Following the discovery by the Food Safety Authority of Ireland that Horse DNA was contained within a third of all tested frozen beefburgers and ready meals, a large-scale enquiry was carried out into the origin of these meat products. The enquiry quickly spread to the UK where products such as frozen spaghetti Bolognese sold in supermarkets including Aldi, Tesco and Findus were found to include 100% horsemeat. It was subsequently discovered that the meat supply chain could be traced back through 8 different companies, located in different countries of Europe including Cyprus, Romania, Luxembourg, the Netherlands and France.

For me, two main aspects have arisen from this scandal. Firstly, in an article written in ‘the Guardian’, it was highlighted that economy beefburgers (cheap, industrialised burgers) are legally allowed to consist of only 47% beef, the remainder made up of protein additives, fat and water (A fact that surely makes the idea of a 100% horsemeat burger suddenly sound a lot more appealing). Secondly, the distance that food is now travelling before it even gets to our plates, a figure that is certainly not decreasing.

In terms of sustainable living, the farm to fork distance is perhaps the most significant aspect that needs to be tackled. In the UK alone, one in four heavy goods vehicles are in fact carrying food. Considering how many tonnes of CO2 emissions could be saved each year if less food was transported such long distances, it is clear to see the potential this area has for drastically reducing our carbon footprints. In the USA this problem has actually worsened. In 1997, the average distance travelled by food stood at 6760 km. However, by 2004 this figure had increased to 8240 km.

By making a greater effort to source local goods as well as promoting seasonal diets, we can not only radically cut down the distance which our food is travelling, but also ensure that a higher level of traceability and quality is delivered for all food products. This will also help in both augmenting the local economy as well as decreasing our carbon footprint. The problem with this ideal however, is ultimately cost related. Although it is much cheaper for us to consume food products bought in supermarkets, the true environmental cost of this practise is often overlooked. The sad reality is, that when faced with a decision of spending a little extra on a locally sourced, 100% Irish beefburger, we will usually choose the cheaper, lower quality option sourced from far afield, attached with a substantial carbon footprint.

As it is simply not economically viable for many people to source the generally more expensive local or even national goods, the government needs to take a more active role in creating incentives for people to buy local. Unfortunately, the irony is that the government itself lacks the money to fund such programmes. Unless the general population recognises the importance of buying local, it looks likely that our future consuming habits will continue to seek out the cheapest option.

Patrick Moss


Reference: 
Lawrence, F. (2013) Horsemeat scandal: the essential guide. The Guardian. 15th February. Available at: http://www.guardian.co.uk/uk/2013/feb/15/horsemeat-scandal-the-essential-guide [accessed 02/04/2013]

Friday, April 26, 2013

Recycling and My Sandwiches

Recycling is one of those things that, in my experience anyway has been drilled into me from a young age. It is something that as I grew older I became complacent with. I went to a primary school which had a green flag and a secondary school which had a strong recycling policy. I won’t sound very academic when I say this but I never really questioned any of it I just recycled because I was told to and admittedly was a bit scared of the consequences if I didn’t. Putting your yoghurt pot in recycling the bin seemed like an easy alternative to a detention.

Now that I am in college and have left all the fear behind I have continued to recycle out of habit but it was only really when I started the living sustainably course that I began to assess what  impact  recycling  can have.  Just looking around college, we as students are producing a lot of waste. I know for me any way I would throw my drinks bottle and paper wrapper from my roll straight into the nearest bin, whether it be recycling or not. Generally speaking it is not!

One of the tasks on this course was to examine the contents of a refuse sack at home.  I live in my family home so as a whole we would produce more waste than the average group of students living in rented accommodation.  This was a seemingly basic task, I remember doing the same in primary school and proceeding to harp on at my mum for her lack of awareness about all things green.  This time I was approaching it in a new light with the understanding that we as a community of inhabitants of the earth really do not look after what we’ve got.

On examining the bin I found a number of things and I have mentioned this in my assessment. Firstly, the general waste bin I found cling film and then aluminum foil. These are both very commonly used household products. Even for those who but lunch when they are in college many sandwiches are wrapped in such packaging.

This may sound silly but I wasn’t sure whether or not these could be recycled. I took it upon myself to check. (This course really has made me interested in the world around me!). It transpires that cling film cannot be recycled everywhere and neither can aluminium foil.  I was shocked at this! Cling film is something that I would have always choses over aluminum foil simply because I believed it would be recyclable and more ecofriendly than aluminium. I’ll admit, this seems like a very small and insignificant discovery but if it were not for this module I wouldn’t have checked.  So my answer is to get a lunch box.

Although a tiny thing I am now more aware of the small changes I can do to avoid contributing to landfill. Something as small as what I chose to wrap my sandwiches in everyday.

I realize I have picked up on a very small issue however out of the whole module I feel it is one thing in particular that felt very relevant to my life and I felt it was something I could deal with straight away.

Naomi Gibson