Archive for the ‘Science’ Category

A Quick Guide for Computer-Assisted Instruction in Computational Biology and Bioinformatics

Tuesday, April 29th, 2008

A Quick Guide for Computer-Assisted Instruction in Computational Biology and Bioinformatics
Source: PLoS Computational Biology

Computational Biology and Bioinformatics (CBB) are indispensable components in the training of life scientists. Current curricula in the life sciences should prepare graduates who master quantitative and computer skills for increased levels of performance. Equally important is that the application of the curricula is driven by an appropriate instructional paradigm and effective learning experiences. Teaching and learning with computers bring specific issues that should be considered beforehand by any instructor. The following Quick Guide for Computer-Assisted Instruction (CAI) outlines ten principles for effective teaching. The principles are aligned with current developments on human cognition and learning and have been drawn from our own experience using CAI in seminars, tutorials, and distance education, in courses on Molecular Life Sciences at the undergraduate level, taught to majors in biology or in other subjects (e.g., nutrition, teaching of physics and chemistry, teaching of biology, sports).

The Guide refers to the preparation, presentation, and assessment of CAI. It should be an aid for those who teach CBB with CAI in class, and it is expected to stimulate student motivation and deeper learning in CBB, thus making class time more effective and improving satisfaction of both students and instructors.

Since You Asked – Bisphenol A

Monday, April 28th, 2008

Since You Asked – Bisphenol A
Source: National Institute of Environmental Health Sciences (NIH)

+ What is BPA?
Bisphenol A (BPA) is a chemical produced in large quantities for use primarily in the production of polycarbonate plastics and epoxy resins.

+ Where is bisphenol A found?
Polycarbonate plastics have many applications including use in certain food and drink packaging, e.g., water and infant bottles, compact discs, impact-resistant safety equipment, and medical devices. Epoxy resins are used as lacquers to coat metal products such as food cans, bottle tops, and water supply pipes. Some polymers used in dental sealants or composites contain bisphenol A-derived materials. In 2004, the estimated production of bisphenol A in the United States was approximately 2.3 billion pounds, most of which was used in polycarbonate plastics and resins.

Polluted Pets: High Levels of Toxic Industrial Chemicals Contaminate Cats And Dogs

Monday, April 28th, 2008

Polluted Pets: High Levels of Toxic Industrial Chemicals Contaminate Cats And Dogs
Source: Environmental Working Group

They are trying their best to warn us.

In the first study of its kind, Environmental Working Group found that American pets are polluted with even higher levels of many of the same synthetic industrial chemicals that researchers have recently found in people, including newborns.

The results show that America’s pets are serving as involuntary sentinels of the widespread chemical contamination that scientists increasingly link to a growing array of health problems across a wide range of animals—wild, domesticated and human.

+ Full Report

Conference Presentations — Untangling the Web of Urban Development: The Challenges and Opportunities of Mixed-Use Projects

Saturday, April 26th, 2008

Untangling the Web of Urban Development: The Challenges and Opportunities of Mixed-Use Projects
Source: Georgia State University College of Law

“Live here, work here, play here” say developers promoting urban mixed-use projects. But in reality, putting these projects together presents new legal, land use, financing and environmental challenges for which many lawyers and related professionals are unprepared — especially in urban areas where they are most needed for core revitalization. This seminar will feature many of the best known practitioners in the mixed-use area to help prepare the region’s lawyers to better handle the challenges of mounting these projects in urban settings.

Audio podcast; presentations in PDF.

Are We Ready? Preparing for the Public Health Challenges of Climate Change

Saturday, April 26th, 2008

Are We Ready? Preparing for the Public Health Challenges of Climate Change
Source: National Association of County and City Health Officials (NACCHO), Environmental Defense Fund (EDF) and George Mason University
From press release (NACCHO):

Climate change is a concern to most local public health directors but few have resources to tackle the problem, according to a national survey conducted by National Association of County and City Health Officials (NACCHO), Environmental Defense Fund (EDF) and George Mason University.

The survey, included in the report Are We Ready? Preparing for the Public Health Challenges of Climate Change, is the first national one of its kind that assesses the perceptions and activities of local public health directors regarding climate change and public health.

More than half of the surveyed directors are concerned about the health effects of climate change on their jurisdictions, though only a small group has been able to make adaptation or prevention a priority.

+ Full Report (PDF; 917 KB)

Corporate Social Responsibility through an Economic Lens

Friday, April 25th, 2008

Corporate Social Responsibility through an Economic Lens
Source: Harvard University, Kennedy School of Government, Faculty Research Working Paper Series

Business leaders, government officials, and academics are focusing considerable attention on the concept of “corporate social responsibility” (CSR), particularly in the realm of environmental protection. Beyond complete compliance with environmental regulations, do firms have additional moral or social responsibilities to commit resources to environmental protection? How should we think about the notion of firms sacrificing profits in the social interest? May they do so within the scope of their fiduciary responsibilities to their shareholders? Can they do so on a sustainable basis, or will the forces of a competitive marketplace render such efforts and their impacts transient at best? Do firms, in fact, frequently or at least sometimes behave this way, reducing their earnings by voluntarily engaging in environmental stewardship? And finally, should firms carry out such profit-sacrificing activities (i.e., is this an efficient use of social resources)? We address these questions through the lens of economics, including insights from legal analysis and business scholarship.

+ Full Paper (PDF; 213 KB)

Confined Animal Feeding Operations Cost Taxpayers Billions, New Report Finds

Friday, April 25th, 2008

Confined Animal Feeding Operations Cost Taxpayers Billions, New Report Finds
Source: Union of Concerned Scientists

Misguided federal farm policies have encouraged the growth of massive confined animal feeding operations, or CAFOs, by shifting billions of dollars in environmental, health and economic costs to taxpayers and communities, according to a report released today by the Union of Concerned Scientists (UCS). As a result, CAFOs now produce most of the nation’s beef, pork, chicken, dairy and eggs, even though there are more sophisticated and efficient farms in operation.

+ CAFOs Uncovered: The Untold Costs of Confined Animal Feeding Operations

Invasive non-native species

Friday, April 25th, 2008

Invasive non-native species (PDF; 132 KB)
Source: Parliamentary Office of Science and Technology (UK)

Non-native invasive species are a significant threat to biodiversity and their ecological impacts are difficult to reverse. They also affect economic interests particularly within agriculture, horticulture and forestry. This POSTnote explores the impacts of invasive non-native species and discusses the forthcoming Great British strategy on invasive non-native species.

Hundreds of EPA Scientists Report Political Interference Over Last Five Years

Thursday, April 24th, 2008

Hundreds of EPA Scientists Report Political Interference Over Last Five Years
Source: Union of Concerned Scientists

An investigation of the Environmental Protection Agency released today found that 889 of nearly 1,600 staff scientists reported that they experienced political interference in their work over the last five years. The study, by the Union of Concerned Scientists (UCS), follows previous UCS investigations of the Food and Drug Administration, Fish and Wildlife Service, National Oceanic and Atmospheric Administration, and climate scientists at seven federal agencies, which also found significant administration manipulation of federal science.

+ Report Summary
+ Executive Summary (PDF; 828 KB)
+ Full Report (PDF; 2.9 MB)

Human activity and the environment: Climate change in Canada

Thursday, April 24th, 2008

Human activity and the environment: Climate change in Canada
Source: Statistics Canada

Canada’s emissions of greenhouse gases (GHGs), major contributors to climate change, rose 25% between 1990 and 2005. However, without increases in energy efficiency, the increase in emissions would have been even greater.

In 2005, human activities released the equivalent of 747 megatonnes of carbon dioxide into the atmosphere in Canada. This was up about 25% from emissions of 596 megatonnes in 1990.

One megatonne is equal to one million tonnes. To put this in perspective, driving a mid-size car about 5,000 kilometres results in about one tonne of emissions.

However, during the same 15-year period, the amount of GHGs emitted per unit of economic activity declined 18%, while the nation’s population grew 17%, and energy use increased 23%.

+ Human Activity and the Environment: Annual Statistics

Carbon Reductions and Offsets

Thursday, April 24th, 2008

Carbon Reductions and Offsets (PDF; 510 KB)
Source: Global Carbon Project (Earth System Science Partnership) via United States Carbon Cycle Science Program
From program news item:

The Global Carbon Project (GCP) of the Earth System Science Partnership (ESSP) recently released a report entitled Carbon Reductions and Offsets, exploring voluntary reductions in carbon emissions via efficiency, emission avoidance, and offsetting. The decision making framework and conclusions are drawn from a case study of the ESSP, where travel, conferences, and office support are the major sources of carbon emissions, although the conclusions are also relevant for other programs and research institutions.

Draft Strategic Plan for the National Earthquake Hazards Reduction Program Fiscal Years 2008-2012

Thursday, April 24th, 2008

Draft Strategic Plan for the National Earthquake Hazards Reduction Program Fiscal Years 2008-2012 (PDF; 1.4 MB)
Source: National Earthquake Hazards Reduction Program (NEHRP)

This document provides a straightforward, realistic, and executable Strategic Plan for the National Earthquake Hazards Reduction Program (NEHRP) during the period 2008-2012. It is based on what is needed and practical, and it presents the most efficient and effective uses of NEHRP resources to reduce future losses from earthquakes in the United States. The Plan is purposely based on a realistic and reasonable assessment of the anticipated constraints facing NEHRP over the Plan duration. This strategy has been studied and developed over a 12-month period by the NEHRP agencies, and has received attention and review at the highest levels of these agencies on the NEHRP Interagency Coordinating Committee (ICC). The pace of Program accomplishment, including addressing the nine new Strategic Priorities, will depend on the funding that is appropriated to the Program agencies during the Plan period.

Climate change hitting Arctic faster, harder

Thursday, April 24th, 2008

Climate change hitting Arctic faster, harder
Source: World Wildlife Fund (WWF)

Climate change is having a greater and faster impact on the Arctic than previously thought, according to a new study by the WWF.

The new report, called Arctic Climate Impact Science – An Update Since ACIA, represents the most wide-ranging reviews of arctic climate impact science since the Arctic Climate Impact Assessment (ACIA) was published in 2005.

The new study found that change was occurring in all arctic systems, impacting on the atmosphere and oceans, sea ice and ice sheets, snow and permafrost, as well as species and populations, food webs, ecosystems and human societies.

Melting of arctic sea ice and the Greenland ice sheet was found to be severely accelerated, now even prompting the expert scientists to discuss whether both may be close to their ‘tipping point’ (the point where, because of climate change, natural systems may experience sudden, rapid and possibly irreversible change).

+ Full Report (PDF; 2.2 MB)

Hat tip: TT

CRS — Science and Technology Policymaking: A Primer

Wednesday, April 23rd, 2008

Science and Technology Policymaking: A Primer (PDF; 455 KB)
Source: Congressional Research Service (via Federation of American Scientists)

Scientific and technical knowledge and guidance influences not just policy related to science and technology, but also many of today’s public policies as policymakers seek knowledge to enhance the quality of their decisions. Science and technology policy is concerned with the allocation of resources for and encouragement of scientific and engineering research and development, the use of scientific and technical knowledge to enhance the nation’s response to societal challenges, and the education of Americans in science, technology, engineering, and mathematics.

Science and engineering research and innovations are intricately linked to societal needs and the nation’s economy in areas such as transportation, communication, agriculture, education, environment, health, defense, and jobs. As a result, policymakers are interested in almost every aspect of science and technology policy. The three branches of government — executive, congressional, and judiciary — depending on each branch’s responsibility, use science and technology knowledge and guidance to frame policy issues, craft legislation, and govern. The science and engineering community, however, is not represented by one individual or organization. On matters of scientific and technical knowledge and guidance, its opinions are consensus-based with groups of scientists and engineers coming together from different perspectives to debate an issue based on the available empirical evidence. In the end, consensus is achieved if there is widespread agreement on the evidence and its implications, which is conveyed to policymakers.

Policymakers then determine, based on this knowledge and other factors, whether or not to take action and what actions to take. If there are major disagreements within large portions of the community, however, consensus is not yet achieved, and taking policy actions in response to a concern can be challenging. Several organizations, when requested by the federal government or Congress, provide formal science and technology policy advice: federal advisory committees, congressionally chartered honorific organizations, and federally funded research and development corporations. In addition, many other organizations and individuals — international intergovernmental organizations, policy institutes/think tanks, the public, professional organizations, disciplinary societies, universities and colleges, advocacy, special interest, industry, trade associations, and labor — also provide their thoughts. These organizations may agree on the scientific and technical knowledge regarding an issue, but disagree on what actions to take in response, as their values on a proposed policy may differ. Policymakers may be overwhelmed with an abundance of information from these organizations.

Despite these challenges, scientific and technical knowledge and guidance can provide policymakers with an opportunity to make their decisions based on the best information available, along with other factors they might take into account, such as cultural, economic, and other values, so that societal and economic benefits are enhanced and losses are mitigated.

Research ethics in developing countries

Wednesday, April 23rd, 2008

Research ethics in developing countries (PDF; 112 KB)
Source: Parliamentary Office of Science and Technology (UK)

The UK funds an increasing amount of biomedical research in developing countries. Research proposals are reviewed by research ethics committees, usually in both the UK and the countries where research is to take place. Exact ethical requirements vary according to national policy, funding body and research institution. A key international document on research ethics, the Declaration of Helsinki, will be revised in 2008. This POSTnote describes the types of research conducted in developing countries, the ethical review process and the arising issues.

Ceres Report: Mutual Fund Industry Opposition to Climate Change Resolutions Begins to Thaw

Tuesday, April 22nd, 2008

Ceres Report: Mutual Fund Industry Opposition to Climate Change Resolutions Begins to Thaw
Source: Ceres

The mutual fund industry’s previously icy attitude toward climate change shareholder resolutions is beginning to thaw as Wall Street starts to recognize the financial risks and opportunities of global climate change, according to a new Ceres report announced today analyzing the voting records of 1,285 funds of 62 leading mutual fund firms.

The report, evaluating 2004-2007 proxy votes, shows that historic opposition toward such resolutions is softening, with some fund firms such as Goldman Sachs supporting many climate resolutions outright, and others, such as Fidelity and Janus, abstaining on most or all resolutions after opposing them in the past. Opposition has dropped from three-quarters of fund votes to less than two out of three, while the number of abstention votes has more than doubled.

Still, many mutual funds are acting inconsistently on climate change — offering new climate-related funds and research products while continuing to oppose virtually all climate-related resolutions. The inconsistent behavior is especially apparent at Morgan Stanley, State Street Global Advisors and other Wall Street firms which are investing aggressively in new climate-related business activities, yet have opposed virtually all climate resolutions in recent years. One positive stand-out noted in the report: Goldman Sachs, which is both promoting climate-related investments while also supporting climate change resolutions.

+ Full Report (PDF; 312 KB)

Trains Transporting the Most Toxic Hazardous Materials Must Use Safest, Most Secure Route

Tuesday, April 22nd, 2008

Trains Transporting the Most Toxic Hazardous Materials Must Use Safest, Most Secure Route
Source: Federal Railroad Administration (US DoT)

Railroads will be required to route every train carrying the most toxic and dangerous hazardous materials on the safest and most secure route under a new federal rule announced today by U.S. Secretary of Transportation Mary E. Peters.

“This strong measure better ensures that rail shipments of hazardous materials will reach their final destinations safely and without incident,” said Secretary Peters, noting the rule applies to trains hauling Poison Inhalation Hazard (PIH) commodities such as chlorine and anhydrous ammonia which are heavily used in farming, water purification, and manufacturing.

Secretary Peters explained that beginning June 1, the rule requires railroads to conduct a comprehensive safety and security risk analysis of its primary route and any practicable alternative routes over which it has authority to operate. The analysis must consider information provided by local communities and a minimum of 27 risk factors like trip length, volume and type of hazmat being moved, existing safety measures along the route, and population density, she said. Railroads must implement their routing decisions based on these analyses by September 2009.

In addition, the rule includes several rail security provisions designed to guard against tampering with the rail hazmat car during transportation, the Secretary said.

The new rule complements the Department’s proposal last month to increase by 500 percent on average the amount of energy a rail hazmat tank car must absorb during a train accident before a catastrophic failure occurs, Secretary Peters said. This dramatic improvement in puncture resistance can be achieved with innovative designs, materials, and technologies available today and in combination with speed restrictions, she said.

+ Interim Final Rule (PDF; 200 KB)
+ Additional information (PDF; 46 KB)

World in Transition – Climate Change as a Security Risk

Monday, April 21st, 2008

World in Transition – Climate Change as a Security Risk
Source: German Advisory Council on Global Change

Without resolute counteraction, climate change will overstretch many societies’ adaptive capacities within the coming decades. This could result in destabilization and violence, jeopardizing national and international security to a new degree. However, climate change could also unite the international community, provided that it recognizes climate change as a threat to humankind and soon sets the course for the avoid-ance of dangerous anthropogenic climate change by adopting a dynamic and globally coordinated climate policy. If it fails to do so, climate change will draw ever-deeper lines of division and conflict in international relations, triggering numerous conflicts between and within countries over the distribution of resources, especially water and land, over the management of migration, or over compensation payments between the countries mainly responsible for climate change and those countries most affected by its destructive effects.

That is the backdrop against which WBGU, in this flagship report, summarizes the state-of-the-art of science on the subject of “Climate Change as a Security Risk”. It is based on the findings of research into environmental conflicts, the causes of war, and of climate impact research. It appraises past experience but also ventures to cast a glance far into the future in order to assess the likely impacts of climate change on societies, nation-states, regions and the international system.

+ Summary for Policymakers (PDF: 1.5 MB)
+ Full Report (PDF; 19.2 MB)

New Engines and Fuels for Cars and Light Trucks

Monday, April 21st, 2008

New Engines and Fuels for Cars and Light Trucks
Source: Policy Insight (RAND Corporation)

Rising oil prices and concerns about energy security and climate change are pressuring automakers to produce vehicles with better fuel economy and reduced greenhouse-gas emissions. This Policy Insight discusses four innovations to fuel and engine technology that automakers will be developing over the next decade: gasoline-electric hybrid technology, advanced diesel technology, vehicles powered by a blend of ethanol and gasoline, and improvements to the traditional gasoline engine. Keefe, Griffin, and Graham highlight the advantages and disadvantages of each, drawing on a benefit-cost analysis in which they calculate the value of the three alternative technologies from a societal perspective, taking into account technology costs, fuel savings, performance benefits, pollution estimates, reductions in oil use, the cost of greenhouse-gas emissions, and other factors. They conclude that advanced diesels and gasoline-electric hybrids have a promising future but that policymakers appear to be favoring ethanol-fueled vehicles through a variety of regulations and tax subsidies.

+ Full Document (PDF: 222 KB)

DRAFT NTP Brief: Bisphenol A

Friday, April 18th, 2008

DRAFT NTP Brief: Bisphenol A (PDF; 550 KB)
Source: National Toxicology Program

The NTP concurs with the conclusion of the CERHR (Center for the Evaluation of Risks to Human Reproduction) Expert Panel on Bisphenol A that there is some concern for neural and behavioral effects in fetuses, infants, and children at current human exposures. The NTP also has some concern for bisphenol A exposure in these populations based on effects in the prostate gland, mammary gland, and an earlier age for puberty in females.

The NTP has negligible concern that exposure of pregnant women to bisphenol A will result in fetal or neonatal mortality, birth defects or reduced birth weight and growth in their offspring.

The NTP concurs with the conclusion of the CERHR Expert Panel on Bisphenol A that there is negligible concern that exposure to bisphenol A causes reproductive effects in non-occupationally exposed adults and minimal concern for workers exposed to higher levels in occupational settings.