Texas, U.S.A - The U.S. Environmental Protection Agency relied on four highly questionable assumptions in 2009 to drastically inflate the health benefits from far-reaching new rules, according to a new report published by the Texas Public Policy Foundation.

“For the last three years, the EPA has justified a series of strict and incredibly expensive new air quality regulations on the assumption that even trace levels of particulate matter can accelerate death,” said the report’s author, Kathleen Hartnett White. “But the science behind the EPA’s new approach to assessing health risks is deeply flawed and misleads the public.”

Since 2009, the EPA has attributed risk of “early death” or shortened lifespan from fine particulate matter (PM 2.5) concentrations far below the health protective national standards and even below natural levels that would occur absent human activity. The EPA is justifying the many unprecedented new regulations commonly known as the EPA train wreck on the basis of the health benefits gained from reducing these new risks from already low levels of particulate matter – a substantial portion of which is airborne dust.

The new regulations, however, target other pollutants and not PM 2.5. In the recently finalized rule to reduce mercury emission from power plants, EPA estimated 99.9% of the health benefits derive from coincidental reduction of particulate matter at levels far below the already conservative federal standard. Without this methodology, the cost of reducing mercury would be far higher than the benefits of further reduction of mercury.

In the report, White challenged four key assumptions at the root of the EPA’s new risk-assessment methodology:

• PM 2.5 causes early death.
• There is no level of PM 2.5 below which risks of premature death cease.
• The EPA’s new rules are necessary to prevent hundreds of thousands of deaths.
• Coincidental reduction of PM 2.5 is sufficient justification for new regulations designed to control other pollutants.

“The EPA’s manipulation of cost-benefit analyses to project massive benefits at comparatively modest cost denies policy­makers and the public the information needed to weigh the many trade-offs involved in complex societal decisions about unacceptable risks,” White said. “Economic impact does matter, and it matters to human health. Life span and health are strongly correlated with the opportunity to work and make a good income.”

The report recommends amendment of the Clean Air Act to establish minimal criteria for rigorous scientific risk assessment of health effects.

The report, “EPA’s Pretense of Science: Regulating Phantom Risks,” is available for download from the Foundation’s website.

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On March 17th, NASA’s spacecraft MESSENGER revealed surprising details about Mercury’s interior and topography, changing astronomers’ understanding of the small planet and how it was formed.

MESSENGER (MErcury Space Surface ENvironment, GEochemistry, and Ranging) is the first spacecraft sent to orbit and study Mercury, which orbits the Sun a mere 36 million miles away. It’s the innermost and hottest planet in our solar system. MESSENGER was launched in August 2004. Before traveling to Mercury, it made a series of flybys around the Earth (once) and Venus (twice).

MESSENGER finally arrived at Mercury on March 18, 2011 and went around three times. Using radio signals, the spacecraft studied Mercury’s gravitational field, magnetic field, topography, internal geological structure, and chemical composition. Because the results of MESSENGER’S flybys around Mercury were so valuable, its mission was extended to last for another year in November 2011.

Mercury’s topography has changed many times since Mercury was fully formed, meaning that there has been a considerable amount of geological activity. For that reason, before studying any of the planet’s internal structure and history, MESSENGER first produced an accurate map of Mercury’s gravitational field using information derived from the planet’s topography and spin state.

Thereafter, two studies were conducted simultaneously, examining Mercury’s internal structure and geography. In one study, the researchers involved with MESSENGER discovered that the planet’s core was much larger than previously thought: it takes up 85 percent of the planet’s radius. Furthermore, it is liquid instead of solid. Previously, scientists assumed that Mercury would have been cooled enough by now for the core to be solid.

Above the core lies an unusual layer that is composed of solid sulphur and iron – a layer not found in the other rocky planets in the Solar System. The outer layers of the internal structure consist of a solid silicate crust and mantle. It is thought that inside the larger liquid core lies a smaller solid core composed of sulphur and iron.

The other study of Mercury’s topography produced other surprising discoveries. When MESSENGER’s Mercury Laser Altimeter (MLA) produced a topographic model of the northern hemisphere and areas in the mid-latitude range, researchers learned that the elevation spread is smaller than similar regions on the Moon and Mars. The area that sticks out the most is lowlands that contain the northern volcanic plains.

Moreover, according to the Carnegie Institute for Science’s press release,

“… the interior plains of Caloris impact basin — 1,550 kilometers (960 miles) in diameter — have been modified so that part of the basin floor now stands higher than the rim. The elevated portion appears to be part of a quasi-linear rise that extends for approximately half the planetary circumference at mid-latitudes. These features imply that large-scale changes to Mercury’s topography occurred after the era of impact basin formation and large-scale emplacement of volcanic plains had ended.”

This new knowledge of Mercury’s internal structure and topography gives insight as to how Mercury formed thermally and how the planet’s magnetic field is generated. Details of the findings of each study from MESSENGER’s mission will appear in two separate papers, which will appear on March 23 in the journal Science.

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The American Lung Association applauds the Obama Administration for adopting public health safeguards to reduce mercury and toxic air pollution from power plants.  The new Mercury and Air Toxics Standards for Power Plants are long overdue and will reduce the harm from air pollution like mercury, lead, arsenic, and a host of other pollutants.

“Since toxic air pollution from power plants can make people sick and cut lives short, the new Mercury and Air Toxics Standards are a huge victory for public health,” said Albert A. Rizzo, M.D., National Volunteer Chair of the American Lung Association, and pulmonary and critical care physician in Newark, Delaware.

“The Lung Association expects all oil and coal-fired power plants to act now to protect all Americans, especially our children, from the health risks imposed by these dangerous air pollutants.”

The Mercury and Air Toxics Standards will reduce toxic emissions from coal- and oil-fired power plants that are found in more than 40 U.S. states and are the largest producers of mercury pollution. Air pollution emitted by coal-fired power plants contains 84 of the 187 hazardous pollutants identified for control by the Clean Air Act.

Many of these pollutants, such as, dioxins, arsenic, and lead, can cause cancer and cardiovascular disease; harm the kidneys, lungs, and nervous system; and even kill. The Mercury and Air Toxics Standards will reduce these pollutants and prevent 130,000 childhood asthma attacks and 11,000 premature deaths each year.

The 1990 Clean Air Act Amendments required the tighter standards on power plants in an effort to reduce toxic emissions in communities across the country. However, big polluters have fought for and won delays for more than 21 years.

“Attempts to delay or dismantle the Clean Air Act, or rules like the Mercury and Air Toxics Standards, reward industry polluters and punish those most vulnerable to dirty air,” said Dr. Rizzo. “These new standards mark a huge step forward in clean air protections and will be responsible for saving thousands of lives each year.”

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