Global Warming – The Facts

Prove It – A Science Museum Exhibition Examining Climate Change

A London’s Science Museum exhibit examines the evidence behind the causes and effects of global climate change and the debates on its mitigation.

Despite great global efforts to prove human activity has made a significant impact on the climate change the world is experiencing, there are still those who doubt the validity of this fact. In the UK, where the government has taken a lead in pledging to combat global warming, a recent ICM poll showed a third of the country’s voters still believe global warming is mostly due to natural forces rather than human activity.

As a means of convincing the doubters, as well as informing those interested in climate change, London’s Science Museum has put together a summary of the evidence behind climate change. It has drawn on the knowledge of a range of experts, to give authoritative and timely insight into climate science and prediction, as well as the wider issues and debates arising from climate change.

For those unable to make it to the exhibition, the Prove It (sciencemuseum.org.uk) website provides access to this informative and engaging look at climate change.

The Science of Global Warming

Since the industrial revolution in the 1700s, typified by the widespread use of fossil fuels, global temperatures have made a leap of 0.75 degrees Celsius. This provided the first indication that human activity is linked to global warming. This exhibition gives a succinct summary of how scientists study climate change. Global temperature records dating back to 1659 have been used in conjunction with cutting-edge techniques to chart the rise of global temperatures. Using the clear link between the amount of carbon dioxide in the atmosphere and global temperatures, trapped carbon dioxide in ice and fossilized pollen have helped build a picture of temperatures millions of years ago. The exhibition gives a clear explanation of how this data has been used to help build computer models to predict the future of climate change.

The Effects and Causes of Global Warming

Given the vast information on climate change, the exhibition does well to distill it down to the fundamental basics underlying climate change. The points made are backed up by examples which highlight the key causes and effects of climate change.

In simple terms, global warming is caused by solar radiation being trapped in the earth’s atmosphere by greenhouse gases, such as carbon dioxide and methane, rather than being reflected back into space. This radiation is then re-emitted to warm the earth’s surface. Human activity has caused a rise in the number of greenhouse gases in the atmosphere.

Various examples of these activities are given as follows:

  • The burning of fossil fuels such as oil, coal, and gas gives off carbon dioxide.
  • Breeding livestock such as cows produces methane.
  • Rice fields produce methane when materials rot underwater.
  • Rotting rubbish at landfill sites produces methane.

The effects of climate change already being observed are also explained and include the following:

  • Changing rainfall patterns.
  • More common and intense extreme weather, such as droughts and hurricanes.
  • Rising sea levels.
  • Melting Arctic Ice.
  • Migration of species.

Fighting Global Warming

Fighting global warming has led to endless debates on what is the best course of action to take in order to mitigate future disasters. It is an area fraught with complexities but the exhibition neatly condenses the key arguments into a comprehensible summary.

The importance of rainforests, the effect on human rights, and what action needs to be taken to avoid reaching a tipping point are all covered. An up-to-date discussion of the impact climate change has on economic prosperity is particularly thought-provoking. Some economists have proposed that governments have a responsibility to invest in new green technologies. This would help mitigate the disastrous effects of climate change, while simultaneously supporting economies.

The recent Copenhagen Climate Change Conference was the largest concerted global effort to come up with a legally binding agreement to combat climate change. However, the talks encountered several stumbling blocks and its outcome fell far short of expectations.

The exhibition outlines the points of agreement and those of contention that arose at the conference. While it was agreed that the temperature rise since the industrial revolution should not be allowed to exceed two degrees Celsius, no specific targets were laid down. The need for developed countries to help poorer countries to adapt to and mitigate climate change was agreed to be of paramount importance.

Summary – Climate Change Exhibition

This exhibition provides a comprehensive guide to all the key issues relating to climate change. Not only is the evidence behind climate change given but the procedures scientists use to study climate change are explained. This adds to the weight of the evidence presented.

The effects, causes, and wider consequences are discussed as are the methods for mitigating against and adapting to climate change. An eye-opening account of the global efforts to fight global warming rounds up this fascinating and educative exhibition.

What is the Kyoto Protocol and Who Does it Apply To?

The Kyoto Protocol was agreed in 1997 in an attempt to curb greenhouse emissions. However, it doesn’t apply to all countries and has been widely criticised.

The Kyoto Protocol is an international agreement which became a legally binding treaty in 2005. It sets specific targets for industrialised nations to reduce carbon emissions by 2012 in an attempt to curb the effects of anthropogenic global warming.

It has been criticised for being both toothless and economically damaging; among the nations not to ratify it was Australia and the U.S (though Australia later backtracked in 2007), while China and India were exempt on account of being considered developing nations at the time the treaty was agreed. However, the Kyoto Protocol’s proponents argue that it is mankind’s best chance at avoiding the worst effects of climate change as a result of human activity.

What is the Kyoto Protocol?

The Kyoto Protocol was born out of the earlier treaty agreed at the 1992 Earth Summit in Rio de Janeiro, known as the United Nations Framework Convention on Climate Change (UNFCCC). The UNFCCC was the first attempt by industrialised nations to monitor greenhouse emissions and curb carbon pollution. The ultimate goal was to find a way of stabilising levels of atmospheric greenhouse gases at a safe level that would mitigate against the worst effects of global warming.

The UNFCCC encouraged nations to reduce emissions but it was not legally binding; the Kyoto Protocol was the first treaty where formal targets were outlined. Industrialised nations were encouraged but not required to ratify the document; emissions caps applied only to those nations who did so. The overall target amounted to a reduction in carbon emissions of around 5% on 1990 levels taken as a four year average between 2008 and 2012.

Which Countries Signed the Kyoto Protocol?

As of November 2009, 191 states had ratified or otherwise approved the Kyoto Protocol, accounting for 63.7% of Annex I country emissions. Annexe I countries are a group defined by the UNFCCC, including all OECD countries and ‘economies in transition’. A full list of ratifying countries is published on the UNFCCC website.

In order for the Kyoto Protocol to become a legally binding document 55% of Annex I emissions needed to be accounted for by countries ratifying the treaty – a statistic which was achieved on 16th February 2005. As of 2010, the majority of outstanding emissions not covered by the Kyoto Protocol come from the United States, who between 1990 and 2005 accounted for 30% of global cumulative carbon emissions.

Criticism of the Kyoto Protocol

Various criticisms of the Kyoto Protocol have been made, ranging from accusations of inefficiency and inequality to suggestions that it is simply ineffective. One of the treaty’s highest-profile critics is James Hansen, who in 2009 boycotted the UN Climate Change Conference in Copenhagen, labelling it a farce and claiming that the developed world nations were paying lip service to real environmental concerns and simply wanted to continue with ‘business as usual’.

Another major criticism was that caps were only applied to developed nations and that ‘developing’ countries, such as China, India and Brazil, were not included despite the fact that they represent a rapidly growing percentage of global carbon emissions – indeed, China is now the third highest producer of global greenhouse gases (8%) after the US (30%) and the EU (23%).

The Kyoto Protocol is an international treaty designed to curb greenhouse emissions among OECD countries and bring them down to 5% below 1990 levels by 2012. As of November 2009, it has been signed by 191 states and the US is the only major nation-state that has yet to ratify the agreement. It has been roundly criticised on a number of levels yet to date it remains the most important international agreement in the fight against anthropogenic global warming.