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American Academy of Pediatrics • American Heart Association
American Academy of Pediatrics • American Heart Association

... and health of millions. Consequently, the nation has a short window to act to reduce those threats. On November 2nd, the Intergovernmental Panel on Climate Change issued its most recent policy assessment of current observations and analyses about the changing climate. The IPCC found: “Continued emis ...
The Influence of Climate Variability and Change on the Science and
The Influence of Climate Variability and Change on the Science and

... America. Currently limited to small and disjunct groves between 1,500 and 2,100 m in the southwestern Sierra Nevada, giant sequoia’s range over the past 10,000 to 26,000 years included the eastern Sierra Nevada (Mono Lake), and locations in the western Sierra Nevada that are both well above (2,863 m ...
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The Role of Landscape Processes within the Climate System

Changing Climate: Pre-visit lesson 2
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A Conceptual Tool for Climate Change Risk Assessment
A Conceptual Tool for Climate Change Risk Assessment

... Understanding the potential consequences of climate change to society is extremely challenging because climate impacts will depend on a multitude of contributing factors that interact in complicated ways and that are characterized by varying degrees of uncertainty (Moss 2011). For example, the risk ...
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PDF

... intensification, trade adjustments) would soften the impact of yield shocks on supply and demand. As a result, regional changes in production would be lower than foreseen by other studies focused on supply effects. Keywords: Bio-economic modelling, Climate change, Agricultural market uncertainty, Fo ...
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FY09 Annual Planning CABS - Library

...  online data fully operational with near real time inputs from existing sites in Brazil and Costa Rica  three new sites to join network, including two outside of Latin America – Madagascar, Tanzania  new protocol for landscape scale monitoring around team sites launched  Strategic partnership wi ...
The Anthropocene epoch: scientists declare dawn
The Anthropocene epoch: scientists declare dawn

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Curriculum Vitae: Lisa Goddard
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Protected Area Policies and Climate Change: The Case of the

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... reservoirs of biodiversity, and they are also showcases for amazing ecological interactions. But reefs world-wide are in danger, and their plight may be a warning of effects that will impact other ecosystems, wreaking havoc with the balance of climate and life as we know it the world over. Coral ree ...
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A blind expert test of contrarian claims about climate data
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... the actual data to assess their validity. For example, the statement ‘‘Our glaciers are growing, not melting’’, accompanied by the further claim that ‘‘almost all of the ice-covered regions of the Earth are now gaining mass’’ appeared representative of contrarian discourse in the authors’ opinion. I ...
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microbes and climate change

... that when they are burned the amount of carbon dioxide released into the atmosphere is similar to the amount absorbed by the growing plant when it carries out photosynthesis. At present a large amount of energy, provided by fossil fuels, is required to grow the biofuel crops, transport them and proc ...
Activity 12 - Derry Area School District
Activity 12 - Derry Area School District

... Extreme Weather Trends, Climate Science and Public Opinion o The scientific consensus is that climate change is occurring and is anthropogenically caused. The frequency and severity of extreme weather events are increasing. In the last two years, the United States has experienced twice the average f ...
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... purported to quantify the degree to which climate change was leading to an increase in heat-related deaths in Stockholm, Sweden. The researchers reported that as a result of an increase in the occurrence of extreme heat events across the 20th century, an extra 288 people died during the period 1980- ...
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Comment by: Patrick J. Michaels and Paul C. Knappenberger

... various methodologies for estimating the monetary value of reductions in CO2 and other GHG emissions. This ongoing review will consider the comments on this subject that are part of the public record for this and other rulemakings, as well as other methodological assumptions and issues. However, con ...
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the Measurement Problem Advances Pol. Psych. (forthcoming) PRELIMINARY DRAFT

... Indeed, it is obvious that Evolution has no relation to OSI whatsoever in relatively religious respondents. For such individuals, the predicted probability of giving the correct answer does not increase as individuals display a higher degree of science comprehension. On the contrary, it trends sligh ...
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Scientific opinion on climate change



The scientific opinion on climate change is the overall judgment amongst scientists about whether global warming is happening, and if so, its causes and probable consequences. This scientific opinion is expressed in synthesis reports, by scientific bodies of national or international standing, and by surveys of opinion among climate scientists. Individual scientists, universities, and laboratories contribute to the overall scientific opinion via their peer-reviewed publications, and the areas of collective agreement and relative certainty are summarised in these high level reports and surveys.The scientific consensus is that the Earth's climate system is unequivocally warming, and that it is extremely likely (at least 95% probability) that humans are causing most of it through activities that increase concentrations of greenhouse gases in the atmosphere, such as deforestation and burning fossil fuels. In addition, it is likely that some potential further greenhouse gas warming has been offset by increased aerosols.National and international science academies and scientific societies have assessed current scientific opinion on global warming. These assessments are generally consistent with the conclusions of the Intergovernmental Panel on Climate Change, the IPCC Fourth Assessment Report summarized:Warming of the climate system is unequivocal, as evidenced by increases in global average air and ocean temperatures, the widespread melting of snow and ice, and rising global average sea level.Most of the global warming since the mid-20th century is very likely due to human activities.Benefits and costs of climate change for [human] society will vary widely by location and scale. Some of the effects in temperate and polar regions will be positive and others elsewhere will be negative. Overall, net effects are more likely to be strongly negative with larger or more rapid warming.The range of published evidence indicates that the net damage costs of climate change are likely to be significant and to increase over time.The resilience of many ecosystems is likely to be exceeded this century by an unprecedented combination of climate change, associated disturbances (e.g. flooding, drought, wildfire, insects, ocean acidification) and other global change drivers (e.g. land-use change, pollution, fragmentation of natural systems, over-exploitation of resources).Some scientific bodies have recommended specific policies to governments and science can play a role in informing an effective response to climate change, however, policy decisions may require value judgements and so are not included in the scientific opinion.No scientific body of national or international standing maintains a formal opinion dissenting from any of these main points. The last national or international scientific body to drop dissent was the American Association of Petroleum Geologists, which in 2007 updated its statement to its current non-committal position. Some other organizations, primarily those focusing on geology, also hold non-committal positions.
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