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climate change threats The threat of climate change, caused by rising global temperatures, is the most significant environmental challenge facing the world at the beginning of the 21st century. It has major implications for the world’s social and economic stability, its natural resources and in particular, the way we produce our energy. In order to avoid the most catastrophic impacts of climate change, the global temperature increase must be kept as far below 2°C as possible. This is still possible, but time is running out. To stay within this limit, global greenhouse gas emissions will need to peak by 2015 and decline rapidly after that, reaching as close to zero as possible by the middle of the 21st century.The main greenhouse gas is carbon dioxide (CO2) produced by using fossil fuels for energy and transport. Keeping the global temperature increase to 2°C is often referred to as a ‘safe level’ of warming, but this does not reflect the reality of the latest science.This shows that a warming of 2°C above pre-industrial levels would pose unacceptable risks to many of the world’s key natural and human systems.1 Even with a 1.5°C warming, increases in drought, heat waves and floods, along with other adverse impacts such as increased water stress for up to 1.7 billion people, wildfire frequency and flood risks, are projected in many regions. Neither does staying below 2°C rule out large- scale disasters such as melting ice sheets. Partial de-glaciation of the Greenland ice sheet, and possibly the West Antarctic ice sheet, could even occur from additional warming within a range of 0.8 – 3.8°C above current levels.2 If rising temperatures are to be kept within acceptable limits then we need to significantly reduce our greenhouse gas emissions.This makes both environmental and economic sense. global negotiation Recognising the global threats of climate change, the signatories to the 1992 UN Framework Convention on Climate Change (UNFCCC) agreed to the Kyoto Protocol in 1997.The Protocol entered into force in early 2005 and its 193 members meet continuously to negotiate further refinement and development of the agreement. Only one major industrialised nation, the United States, has not ratified the protocol. In 2011, Canada announced its intention to withdraw from the protocol. In Copenhagen in 2009, the members of the UNFCCC were not able to deliver a new climate change agreement towards ambitious and fair emission reductions. At the 2012 Conference of the Parties in Durban, there was agreement to reach a new agreement by 2015 and to adopt a second commitment period at the end of 2012. However, the United Nations Environment Program’s examination of the climate action pledges for 2020 shows a major gap between what the science demands to curb climate change and what the countries plan to do.The proposed mitigation pledges put forward by governments are likely to allow global warming to at least 2.5 to 5 degrees temperature increase above pre- industrial levels.3 the nuclear issue The nuclear industry promises that nuclear energy can contribute to both climate protection and energy security, however their claims are not supported by data. The most recent Energy Technology Perspectives report published by the International Energy Agency includes a Blue Map scenario including a quadrupling of nuclear capacity between now and 2050.To achieve this, the report says that on average 32 large reactors (1,000 MWe each) would have to be built every year from now until 2050. According to the IEA’s own scenario, such massive nuclear expansion would cut carbon emissions by less than 5%. More realistic analysis shows the past development history of nuclear power and the global production capacity make such expansion extremely unviable. Japan’s major nuclear accident at Fukushima in March 2011 following a tsunami came 25 years after the disastrous explosion in the Chernobyl nuclear power plant in former Soviet Union, illustrating the inherent risks of nuclear energy. Nuclear energy is simply unsafe, expensive, has continuing waste disposal problems and can not reduce emissions by a large enough amount. climate change and security of supply Security of supply – both for access to supplies and financial stability – is now at the top of the energy policy agenda. Recent rapidly fluctuating oil prices are lined to a combination of many events, however one reason for these price fluctuations is that supplies of all proven resources of fossil fuels are becoming scarcer and more expensive to produce. Some ‘non-conventional’ resources such as shale oil have become economic, with devastating consequences for the local environment.The days of ‘cheap oil and gas’ are coming to an end. Uranium, the fuel for nuclear power, is also a finite resource. By contrast, the reserves of renewable energy that are technically accessible globally are large enough to provide more than 40 times more energy than the world currently consumes, forever, according to the latest IPCC Special report Renewables (SRREN). Renewable energy technologies are at different levels of technical and economic maturity, but a variety of sources offer increasingly attractive options. Cost reductions in just the past two years have changed the economic of renewables fundamentally, especially wind and solar photovoltaics.The common feature of all renewable energy sources, the wind, sun, earth’s crust, and ocean is that they produce little or no greenhouse gases and are a virtually inexhaustible ‘fuel’. Some technologies are already competitive; the solar and the wind industry have maintained double digit growth rates over 10 years now, leading to faster technology deployment world wide. references 1 W. L. HARE. A SAFE LANDING FOR THE CLIMATE. STATE OF THE WORLD. WORLDWATCH INSTITUTE. 2009. 2 JOEL B. SMITH, STEPHEN H. SCHNEIDER, MICHAEL OPPENHEIMER, GARY W. YOHE, WILLIAM HARE, MICHAEL D. MASTRANDREA, ANAND PATWARDHAN, IAN BURTON, JAN CORFEE-MORLOT, CHRIS H. D. MAGADZA, HANS-MARTIN FÜSSEL, A. BARRIE PITTOCK, ATIQ RAHMAN, AVELINO SUAREZ, AND JEAN- PASCAL VAN YPERSELE: ASSESSING DANGEROUS CLIMATE CHANGE THROUGH AN UPDATE OF THE INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE (IPCC) “REASONS FOR CONCERN”. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES. PUBLISHED ONLINE BEFORE PRINT FEBRUARY 26, 2009, DOI: 10.1073/PNAS.0812355106.THE ARTICLE IS FREELY AVAILABLE AT:HTTP://WWW.PNAS.ORG/CONTENT/EARLY/2009/02/25/0812355106.FULL.PDF. A COPY OF THE GRAPH CAN BE FOUND ON APPENDIX 1. 3 UNITED NATIONS ENVIRONMENT PROGRAMME (UNEP): ‘BRIDGING THE EMISSIONS GAP’. A UNEP SYNTHESIS REPORT, NOV. 2011. 15 image SOVARANI KOYAL LIVES IN SATJELLIA ISLAND AND IS ONE OF THE MANY PEOPLE AFFECTED BY SEA LEVEL RISE: “NOWADAYS, HEAVY FLOODS ARE GOING ON HERE. THE WATER LEVEL IS INCREASING AND THE TEMPERATURE TOO. WE CANNOT LIVE HERE, THE HEAT IS BECOMING UNBEARABLE. WE HAVE RECEIVED A PLASTIC SHEET AND HAVE COVERED OUR HOME WITH IT. DURING THE COMING MONSOON WE SHALL WRAP OUR BODIES IN THE PLASTIC TO STAY DRY. WE HAVE ONLY A FEW GOATS BUT WE DO NOT KNOW WHERE THEY ARE. WE ALSO HAVE TWO CHILDREN AND WE CANNOT MANAGE TO FEED THEM.” © GP/PETER CATONPDF Image | SUSTAINABLE WORLD ENERGY OUTLOOK
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