Welcome to the blog of the course and textbook Facing up to global warming: What is going on and what you can do about it. This course is run by Professor Nick Gray of the Trinity Centre for the Environment at Trinity College Dublin.

Tuesday, November 17, 2015

90% of seabirds have consumed plastic

. Photograph: Chris Jordan/Midway: http://bit.ly/1iYURFI
Our litter and waste has reached a new level of disbelief with a new study showing that upto 90% of seabirds will have ingested plastic items they have mistaken for food.  A report in the Guardian has highlighted their work link.  Their results can be seen in the Proceedings of the National Academy of Sciences.

We still haven’t learnt as our production of platics in the past 11 years exceeds the amount produced since it was first produced  in the 1950s.But something is being done and new a new collection boom is hoping to start removing larger material soon.

You can help right now by picking up litter that will find its way eventually into the sea.

Posted: Nick Gray
Twitter @Nickgraytcd

Friday, November 13, 2015

Major Greenland glacier victim to global warming

Image time series of Greenland’s Zachariæ Isstrøm glacier as seen by the 
NASA/USGS Landsat satellite. Retreat of the glacier front is indicated by lines, 
color-coded from dark green (2003) to light green (2015).Credits: NASA/USGS
A NASA funded project has identified that the massive Zachariae Isstrom, that represents 5% of the total Greenland ice sheet, broke loose from a stable position in 2012 started a phase of  accelerated retreat. The glacier drains ice from an area of 35,440 square miles (91,780 square kilometers), that is enough water to raise global sea level by more than 18 inches (46 centimeters) if it were to melt completely. The bottom of Zachariae Isstrom is being rapidly eroded by warmer ocean water mixed with growing amounts of meltwater from the ice sheet surface. Currently it is now losing 5 billion tons of ice and water every year into the North Atlantic Ocean. Jeremie Mouginot, an assistant researcher in the Department of Earth System Science at the University of California, Irvine who has published this study in Science says that the result of this glacier breaking up and calving high volumes of icebergs into the ocean, will result in rising sea levels for decades to come. Full report Link

Adjacent to this is another large glacier Nioghalvfjerdsfjorden which is melting at a slower rate, but together they make up 12% of the Greenland ice sheet, so together they will raise sea levels by more than 39 inches (99 centimeters) if they completely melt.

NASA has a new project - Oceans Melting Greenland- which is monitoring ocean conditions around Greenland. https://omg.jpl.nasa.gov/portal/  
To find out more about global warming and what you can do about it visit http://bit.ly/1NPLbun
Posted Nick Gray
Tweet @Nickgraytcd

Friday, October 16, 2015

World Food Day

Today is World Food Day which highlights the urgent issue of chronic hunger and promotes positive action through events in some 150 countries.  Follow the action on the web or  on Twitter

About 795 million people are undernourished globally, down 167 million over the last decade, and 216 million less than in 1990–92. The decline is more pronounced in developing regions, despite significant population growth. In recent years, progress has been hindered by slower and less inclusive economic growth as well as political instability in some developing regions, such as Central Africa and western Asia.

Read more in the latest FAO Report The State of Food Insecurity in the World

Posted : Nick Gray https://twitter.com/Nickgraytcd

Wednesday, October 14, 2015

Living Sustainably in the centre of New York

It is not easy living sustainably but one of my personal hero’s, Lauren Singer, does just that…right in the centre of New York.  This video is by Alessandra Potenza who has made this video for The New York Times Upfront (issue Oct. 12th 2015).

Tuesday, October 13, 2015

Aviation fuel use set to rocket despite better engine efficiency

Greenhouse gas emissions from commercial air travel is a major contributor to global warming emitting approximately 700 million metric tons of carbon dioxide (CO2) in 2012 alone. 

A new report from the International Council on Clean Transportation (icct) (www.theicct.org) Fuel efficiency trends for new commercial jet aircraft: 1960 to 2014 has explored the fuel efficiency in relation to UN targets.

It shows that  aviation fuel use, including military aircraft, quadrupled between 1960 and 2006.  While most countries are agreeing to 80% reductions in emissions by 2050, aviation fuel use is expect to increase by 300% over the same period.  The report explores how efforts to increase fuel efficiency of aircraft is continuing having already achieved an annual rate of reduction of 1.3% since 1968. Between 1968 and 2014 the average fuel burn of new aircraft fell approximately 45%, or a compound annual reduction rate of 1.3%. However, the efficiency of new aircraft are still a decade behind the United Nations’ fuel efficiency goals for new aircraft.

Thursday, September 24, 2015

Facing Up To Global Warming Published

Facing Up To Global Warming: what is going on and how you can make a difference?

This new book was published today and  explores climate change and how individuals can make a difference. 

 Below is the Preface from the new book.

In 1972, a startling book was published called Limits to Growth . This book became hugely influential in the environmental movement, and while it alerted us to the fragility of our future on planet Earth, it also, inadvertently, helped to eventually undermine the credibility of environmentalism. The book predicted when certain non-renewables, including fossil fuels and metals, would become exhausted. The predictions were based on the best available knowledge at that time, but what it never envisaged in the early 1970’s, was that within a decade humans would be extracting oil, gas, and minerals in some of the remotest, extreme, and fragile places on Earth … a process that has continued and expanded to the present day. So the predictions proved incorrect in practice, but it reinforced the idea that all resources are limited and are slowly being exhausted.

This book became a driving force for many environmental scientists who realized that we have to act both collectively and individually to preserve our home, planet Earth, with its unique biosphere and which is home to millions of different living organisms of which we are just one species. For me personally, being an environmental scientist has been a long and often disappointing journey and at various times I have been shocked, scared, and often depressed by the unfolding of the current crisis which is so intertwined with global warming. But, to my surprise, in recent years I have begun to feel more hopeful that perhaps we can deal with our climate and resource problems to create a sustainable planet. So in this book, I have attempted to explain what the problems are and suggest some solutions. However, the book comes with a warning. During the 15 chapters that follow, I am going to make a lot of you really annoyed and possibly upset, I apologize in advance. I am not trying to shock; I am simply putting the facts before you so that you can make up your own mind. Neither am I telling anyone that their lifestyle is wrong, or alternatively, that they are better than the next person because they have invested in green energy or a hybrid car. The book is an overview; it is not a text on the theory of sustainability or population dynamics; it simply looks at what the individual should know and addresses some of the issues closest to our everyday lives.

There are hundreds of academic and specialist texts on sustainability, but they fail to link sustainability to tackling global warming, especially at the individual level. Adopting any form of sustainable actions in your life will cause significant effects both direct and indirect. Such actions will lead to changes that will influence economic and social norms … so sustainability if properly applied will mean socio economic change. I begin the text by giving a brief overview of the problems of climate change and the real difficulties that having such a rapidly growing population is placing on the idea of a sustainable and equitable planet. Discussions on population is always a very emotive issue and so I have simply given some basic facts, and shown that as population grows our ability to live sustainably on planet Earth becomes more challenging. So this is not a comfortable book.

Is the text political? I have tried not to be, but if you advocate changing people’s lifestyles, then it will appear to be political. Then, we have the concept that everyone on the planet matters and that the concept of global justice and human rights is important when assessing the sustainability of our own lifestyles. So trying to avert these climate-mediated crises by ensuring that everyone has enough for their needs without being wasteful is a good starting point. However, that starting point has to be an acknowledgment that all people are equal, and that we should all have the right to pursue happiness and well-being. Is this naïve? Of course it is, but what else are we to strive for in a truly global and fair society. Global warming raises serious social as well as economic questions and many of these are going to be very difficult to deal with in practice, and my aim is to try and make you think about these issues from a personal perspective. Can we have finite economic growth? Can we have finite consumerism? Unfortunately, the answer has to be no to both of these questions, which means that both economists and social geographers or planners have a lot of work to do and that we are going to have to eventually reinvent our economy and social environment to achieve these goals.

There are also many other important environmental issues that we also need to consider and many of these are also linked to global warming such as deforestation, exploitation of new fossil fuel reserves, intensification of agriculture, and overexploitation of water resources. However, many of these issues such as pollution, are less important in the context of global warming, as we now have them largely under control. We have made huge strides in dealing with air, water, and land pollution over the past 40 years, and there are scientists and regulatory bodies all dealing with these issues on an on-going basis. Such issues are predominately local or at worst regional, but rarely global, and what is important is that we have the technology and infrastructure to deal with them. But controlling carbon dioxide and other greenhouse gas emissions must now be everyone’s priority. If we have to reduce carbon emissions by 80 % by 2050 to avert a global crisis, this will mean using significantly less energy in the developed world than we currently use, and while this does not necessarily mean an immediate and huge change in our everyday lives, it does mean changes to our current lifestyles. This is not going to be easy and the burden has to be shared by everyone. However, the fact is that people feel very threatened by the idea of altering their lifestyle, even when change can be for the better. 

We also need to understand that some sectors of society are using more than their fair share of global resources, but that in the context of global warming everyone must act responsibly if we are to succeed in mitigating climate change. Those in developing countries also desire the technology, food, travel, etc. we enjoy, and to break this cycle we in the developed world need to begin to pull back from our current high-energy lifestyle while allowing the poorer nations to develop and become sustainable.

This book will never be welcomed by those who are pretty happy with the status quo and who have not become genuinely concerned, possibly scared, by the possibility of what global warming may do to our home, planet Earth. This is a very general text that looks at different aspects of our lives which we, as individuals, have control over. It is simple things like travel, food, recycling, using resources … all those things which we are all involved in on a daily basis; and how our actions affect the future of planet Earth and our ability to sustain that ever growing human population. I hope that this book will help you think and act from a position of knowledge and reassurance.

I hope that the majority of you will be reassured that we are beginning to tackle global warming successfully, but in order to succeed in stabilizing our new climate, and I believe we can, we need your help through direct action. You really can make a difference. This book is a personal journey and during it I will be asking you to do various things. Some are critical others will be just things that I hope you will try, but to work, I need a commitment from you. The journey is not free, it comes at a cost, and you have to decide just how much you are willing to pay for your planet.

This is about your future.
Nick Gray
Trinity Centre for the Environment

Thursday, August 13, 2015

Today is Earth #Overshoot Day

This year Earth #Overshoot Day falls on  August 13th...today.  This is when we have used up all our natural capacity.

Find out more and act on climate change...it is what you do that makes the difference and makes tackling global warming possible.  For help in doing this go to 

Posted: Nick Gray