Showing posts with label climate change. Show all posts
Showing posts with label climate change. Show all posts

12 January, 2015

TO THE TRUTH I NEVER KNEW, NOW I CAN MAKE IT WITHOUT YOU

HAPPY MONDAY!



Firstly, thank you so much for taking this journey with me to find out more about livestock production and the impacts we are making through unconscious everyday decisions. I enjoyed writing this blog much more than I expected, and I am so thankful for having the chance to give it a go. Whilst you may have learnt a lot from this blog, it has been a learning curve for me too, and I've constantly been growing as I learn more about the information I'm digging out.

Although this is the end of my Geography assessment, but I would really appreciate it if you left me any comments with your thoughts and if you have any great website links for me to learn even more! I would LOVE to read it!

So, into the nitty gritty stuff, I'm going to just briefly outline the main solutions to the meat problem.

1. Government

The government needs to find ways to discourage major producers from rearing livestock near city areas through either zoning, taxes or incentives. For example, in Thailand, there are high taxes on poultry production within a 100km radius of Bangkok. This has been effective in reducing poultry production near Bangkok.

2. Waste management

Use manure as a fertiliser rather than polluting waters.

3. You

Become as vegetarian/vegan as you possibly can. “Eat meat, but less often — make it special,” Mark Sutton, lead author of a U.N. Environment Programme 2013 study on meat consumption, said. “Portion size is key. Many portions are too big, more than you want to eat. Think about a change of culture that says, ‘I like the taste, but I don’t need so much of it.’”

I want to leave you with something very important that I have learnt through this journey with you.

Understand that you, as a consumer, have a level of social responsibility. What you spend your money on is the key to change (by altering demand, it can alter supply).

Mooney says "If they are informed that they do have choices to help build a  more sustainable and equitable world, they can make better choices."

Finally, a quick reminder of the serious extent of animals slaughtered just for the plate on your table.



You've been such amazing readers every Monday, I really hope you're able to join my Meatless Mondays, whether I have a new post every Monday or not! To make me very happy, please sign the Meatless Monday pledge!!



01 January, 2015

A LITTLE TASTE OF THE OTHER SIDE

HAPPY NEW YEAR EVERYONE!


Thought I'd leave a lighter post for you all to read in the New Year's so let's take a look behind the scenes of your favourite meal at your favourite restaurant. What are the responsibilities of chefs and how are they related to improving social awareness of what is 'good' for you and what is 'bad'?


The Social Responsibilities of Chefs:

http://elitedaily.com/life/culture/social-responsibility-chefs-consumers/618763/

15 December, 2014

WELL, MAYBE THERE ARE ULTERIOR MOTIVES TO TURNING VEGETARIAN...

On a lighthearted note... 


9 Reasons why Vegetarians Make Awesome Girlfriends

GET VEGUCATED

This week I came across a documentary which highlighted the journey of a few Americans changing their American diets to a vegan diet. Being able to see Americans go from one extreme to the other; being heavy meat eaters and transitioning to clean plant based palettes is actually very inspiring.


The journeys show how each person from varying backgrounds went through ups and downs through the transition phase and dictates the possible trip ups we may face which are all rather understandable.

Take a look at the documentary to see how they change their diets and the explanations on environmental impacts but also, whether livestock production is as humane as we imagine!


If you only want to see the environmental impact explanation only, skip to 35.00mins! 



Happy watching!



Perhaps even UCL should get vegucated!!
These are some posters I spotted around UCL...

Although the information may be true, and of course we should all think twice before using up resources, but I have never EVER come across a poster in canteens to say 'Did you know of the impacts of choosing this meal of steak and chips?'

01 December, 2014

GLOBAL WARMING CONCLUSIONS

After our discussion on the main contributors to global warming and environmental change, here is a wrap up of what we can possibly conclude from research and data.


Possible conclusions and predictions:

Overall, the increasing global demand for meat is most likely to negative effect the environment. 


1) Demand

Since the demand for meat is increasing (perhaps even exponentially) through developing countries, increase in incomes, population growth and urbanisation, the amount of livestock would probably increase since suppliers and those in the industry will see this as a profitable opportunity. Predicted by WHO, annual meat production is projected to increase from 218 million tonnes in 1997 - 1999 to 376 million tonnes by 2030.


2) Supply - Large scale production

Since more space will be needed for large scale production of meat, whether it is areas for the livestock to live and graze, but also slaughter houses. This means there are implications for these processes to become more closely located to urban centres. By being in close proximity with urban centres, a range of environmental and health risks will potentially exist, such as those mentioned before. Land and water requirements would lead to a degradation and depletion of resources. 


3) Urbanisation and development

Due to urbanisation, development in certain countries and technological improvements, transportation of meats are becoming more efficient. This has also spurred on a 'taste for meat'  This is evident in city dwellers who have a varied diet rich in animal proteins and fats, and characterized by higher consumption of meat, poultry, milk and other dairy products. This can be seen in the table below. There is a significant increase in meat consumption in Brazil and China. However it can be seen that the consumption in North America and other developed countries remain at a much higher level. 





World
Developing countries
Near East and North Africa
Sub-Saharan Africaa
Latin America and the Caribbean
East Asia
South Asia
Industrialized countries
Transition countries
Source: Adapted from reference 4 with the permission of the publisher.

As shown, the global demand is increasing in general, but is especially prominent in the BRICS, the five main emerging national economies which represent the trend in growing meat demand within countries with increasing income and wealth. 


The flip side




Although meat consumption can be seen to be increasing in the BRICS, it has actually stagnated in the U.S. according to Business Insider. Perhaps it can be argued that more educated and industrialised the countries are, despite having seen a rapid increase in meat production since 1950s, it has recently stagnated. For example, in the U.S., consumption has dropped by 9% from 2007 to 2012. This could be due to low-meat trends, and more educated consumers who are more concerned with the source of the meats. Furthermore, due to the horse meat scandal which was marketed as beef in early 2013, consumers have become more cautious about what they are eating and the credibility of food labels.

Conclusions:
Perhaps the key conclusion here, is trying to educate consumers on the health risks, environmental risks and the reality of how livestock are treated which can then reduce demand for meat. Although policy measures can be put into place to help reduce the harmful effects, consumers also play a big part too.

According to www.virtualcentre.org, the best way to improve efficiency is to price natural resources with the externalities considered. This is because when public resources are underpriced, it causes overexploitation. As a result, such a pricing strategy is able to allow individuals who use the resources to be mindful of the real cost of its usage.


Efforts here can lead to large and multiple payoffs.

Possible solutions:
To reduce greenhouse gases that have been and will be emitted as a result of the livestock sector, a few solutions have been raised in 'Livestock's Long Shadow':
  • Restore historical losses through conservation tillage
  • Agroforestry (a more sustainable land use system in which trees or shrubs are grown around or among crops to promote more healthy, sustainable and productive land usage)
  • Restoration of desertified pastures
  • Methane emissions: improved diets to reduce enteric fermentation, improved manure management, biogas
  • Nitrogen emissions: improved diets and manure management
  • Use tradable rights for natural resources
  • Remove damaging subsidies and alter the price for the resources in order to take into account the environmental externalities

How can we move on from here?

Educate yourself about meat production and consumption. So stay tuned... *wink

 
Happy Meatless Monday! Tune in next Monday for a new post on the consumption patterns by country!

10 November, 2014

WATER'S YOUR PROBLEM?

This week I was able to cosy up to read 'Livestock's Long Shadow: Environmental Issues and Options'; a United Nations report released by the Food and Agriculture Organisation of the United Nations. So far we have focused on the issues surrounding greenhouse gas emissions as a result of meat production and the responsibility of the consumers in contributing to the meat consumption and trend. 

Having read the report, it has highlighted a few important things on the correlation between the livestock sector and global environmental change. I will be writing about other vital environmental problems related to meat production in later posts, and will be looking at possible solutions outlined by the report. These solutions are mainly focused on the technical and political levels in reducing the environmental harm that has and will be caused as a result of meat production.



Today we will touch upon water use and the solutions from a political level to cover how global environmental change can be reduced.



The world is slowly opening their eyes to more issues from freshwater shortage, scarcity and depletion. 64% of the world'spopulation is expected to live in water-stressed basins by 2025. Thelivestock sector accounts for up to 8% of the global human water use (mainly through irrigation for feedcrops).

i) Water Overuse



ii) Water Contamination and Pollution:
The main contributors to water pollution include animal waste, antibiotics and hormones, chemicals from tanneries, fertilisers and pesticides used in feed production and sediments from eroded pastures.


Livestock operations overuse water and may lead to water contamination. The large amount of waste pro­duced on factory farms exceeds the capacity of nearby cropland to absorb it. As a result, manure goes from being a valuable agricultural resource to what is essentially toxic waste. Nitrates, heavy metals, and antibiotics present in manure can seep into groundwater and pollute surface water. Furthermore, when manure lagoons leak or burst, again, nitrates become exposed to the water we drink. The Environmental Protection Agency (EPA) has warned that E. Coli, salmonella, and Giardia found in dairy cattle waste can contaminate drinking water and cause acute gastroenteritis, fever, kidney failure, and even death. It not only affects humans,  but also the sea animals too. There have been numerous instances where this has killed off thousands of fish. No wonder people are saying fish are becoming more scarce!


Water pollution leads to fish death


Water pollution can lead to several undesired results, it contributes to eutrophication; a process where water bodies receive excess nutrients that stimulate excessive plant growth. It could also lead to "dead" zones/hypoxia in coastal areas, this is causes regions of water that lack oxygen necessary to support animal life and as a consequence, become a cause for extinction. Not only does water pollution affect animal life, but also degrades coral reefs. Apart from affecting animals and plants, water pollution causes human health problems due to reusing water in the water cycle and can cause an emergence of antibiotic resistance.

Livestock also affects the replenishment of freshwater by compacting soil, reducing infiltration, degrading the banks of watercourses, drying up floodplains and lowering water tables.


Please save us...

How can water pollution be avoided?

The best way to mitigate water pollution would be to better manage animal waste. This is important as animal waste can cause excess nutrients and pathogens to enter and harm water quality; instead the waste could be reused as a natural fertiliser for crops. Furthermore, better diets for the livestock can improve nutrient absorption.
Possible solutions:

Since water pollution is a problem for not only plants and animals, but humans too, it means humans should put more care into reducing water pollution where possible. I have broken down some possible solutions in improving efficiency of water  use. The first solution is to improve the efficiency of irrigation systems such that there are no unnecessary water losses.

The fact that water is often free and easily available causes the 'free rider effect' used in Economics, where a resource may be over exploited since it is priced at 0. To avoid this, water should be priced at a level that takes the externality into account. Similarly, there should be regulatory quantitative frameworks to limit usage. 

To reduce concentrated areas of livestock rearing especially near cities, zoning regulations and taxes can help to control this. As a result, the harmful effects on human health can be restricted too. 

Happy Meatless Monday!

Tune in next Monday for a new post on Land Degradation.

27 October, 2014

HOW TO TRAIN A RUMINANT

Methane (CH4)  is emitted naturally and through human sources. Natural sources make up 36% of all Methane emissions and this includes wetlands, turmite and the oceans. The remainder is emitted via human activities; this includes landfills, livestock farming and use of fossil fuels. Methane can be removed from the atmosphere through natural processes in soil. But for a long time now human activities have been creating methane emissions much more rapidly than the Earth can remove them, increasing global methane levels.


Methane's lifetime in the atmosphere is shorter than carbon dioxide, but "animals produce 37 percent of methane, which has more than 20 times the global warming potential of carbon dioxide."  Additionally, as shown in the pie chart below, the human sources of methane are predominantly due to livestock farming and fossil fuel production. This is indicative of the importance and detrimental impact of methane emissions.




So how exactly do livestock emit methane?

If you want the short answer to how animals emit methane, look no further, we do it all the time: burps, farts and breathing.


No kidding.



And the long answer goes like this.

Cows come under a the mammal group called ruminants which acquire nutrients from plant based products. They have four stomachs; where the food is digested. The stomach is filled with bacteria, and when food is digested, methane is also manufactured in the process. 

(If only I had four stomachs...)





Furthermore, in the animal manure storage tanks, methane is produced. Imagine the extent of methane produced;

How to train a ruminant:

Give your cow some garlic to reduce methane emissions, apparently...


Happy Meatless Monday! Tune in next Monday for a new post on Nitrous Oxide emissions.

20 October, 2014

TO REDUCE CO2 EMISSIONS, PLEASE HOLD YOUR BREATH


Joke.


I sincerely hope it wasn't too late to say the title was a joke...


A lot of us (including me) are clouded by the idea that by recycling every last bit of recyclable material, not driving at all, using alternative energy sources and growing plants in your back garden can do a whole lot in reducing carbon dioxide, thus keeping climate change to a minimum. I mean, every time I scolded my sister for leaving the light on without needing it made me feel like a saint. (Why so serious?) My parents even considered changing to a hybrid car!


Have you changed to a hybrid car?




Did you know?
Well, we are not entirely wrong in thinking this can help us curb climate change. Although these measures are contributing to the improvement of the lives of impending generations, it is worth looking into the bigger picture and the major driver of the actual problem.

Allow me some time to break down precisely why our world is a bombshell that is about to explode.
What is global warming?
Global warming is caused by the mixture of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). These are the three main causes of climate change. Not enough of us realise that animal agriculture is one of the largest contributor to global warming through the immense carbon dioxide, methane and nitrous oxide emissions.

How does animal agriculture lead to increases in CO2?


Below is a break down of the steps in animal agriculture which require high amounts of energy and thus releases a lot of CO2 (Taken from Get Vegucated Documentary):




FUN FACT:


Animal manure releases CO2 as well.

If you're into tables and figures, there is a cohesive break down of CO2 emitted in grams per kilograms of food from its production, according to timeforchange.org.



CO2-Emissions (in g CO2e per kg food):

We can also break this down by looking at carbon dioxide emissions per calorie:
http://shrinkthatfootprint.com/food-carbon-footprint-diet

As we can see, in both instances, the carbon dioxide emissions of foods differ according to its process of production, but it is also very clear that despite different measures; meat and particularly beef has the biggest impact on the environment due to its highest carbon dioxide emissions. 

Thus perhaps we should all think twice about what we consume and the amount we consume, as much as how much energy we use/waste!

P.S. If you live in the US, please don't forget to participate in Food Day on 24th of this month! http://www.foodday.org/about

P.S.S. Food Day inspires Americans to change their diets and our food policies. Every October 24, thousands of events all around the country bring Americans together to celebrate and enjoy real food and to push for improved food policies.



Happy Meatless Monday! 
Tune in next Monday for a new post on Methane emissions!