Plain Meaning, Precedent, and Metaphysics: Interpreting the “Point Source” Element of the Clean Water Act Offense

This Article, the fourth in a series of five, examines the continuing struggles to define “point source” and “nonpoint source” under the Clean Water Act. State regulation of nonpoint sources is neither pervasive nor robust, and most continuing water pollution problems can be traced primarily to nonpoint sources. EPA should define nonpoint sources by regulation and begin to expand the definition of point source by incorporating established case law and Agency practice to bring more nonpoint sources into the point source definition

Real wages inequality and globalization in Latin America before 1940

La Historia Económica en Latinoamérica. Edición a cargo de Pablo Martín Aceña, Adolfo Meisel, Carlos Newland.Editada en la Fundación Empresa PúblicaHacia 1914 existían notables diferencias económicas entre los países del Cono Sur y Cuba y el resto de América Latina. El artículo indaga las razones de estas diferencias, cuando aparecieron, así como la distancia existente entre los países latinoamericanos, los de la cuenca mediterránea y el líder industrial. Se ocupa de examinar el papel que desempeñaron las fuerzas demográficas, la localización geográfica y el grado de globalización e integración económica. El trabajo utiliza nuevos datos de salarios reales y precios relativos de los factores de siete países latinoamericanos y de tres regiones mediterráneas. Estos datos se comparan con la información disponible para Gran Bretaña y los Estados Unidos.By 1914, there were huge economic gaps between the Soutbem Cone plus Cuba and the rest of Latin America. Can they be explained by the varying ability of these countries to exploit the first great globalization boom afier about 1870? Or did the gaps appear much earlier? And what about the gaps between Latin America and the Mediterranean, let alone with industrial leaders like Britain? What role did geographic isolation, globalization and demographic forces play in the process? Conventional GDP estimates are much too coarse to confront these questions. This essay uses a new data base on real wages and relative factor prices for seven Latin American and three Mediterranean regions, the latter being a source of so many of immigrants for the former. These ten regions, plus comparative information firom Britain and the United States, form the data base for the paper.Publicad

Plain Meaning, Precedent, and Metaphysics: Interpreting the “Pollutant” Element of the Federal Water Pollution Offense

This Article, the second in a series of five, examines the meaning of “pollutant” under the Clean Water Act. Congress and EPA have defined “pollutant” to mean a list of specific substances and broad categories of materials and wastes discharged into water, e.g., “biological materials” and “chemical wastes.” The definition is broad enough to encompass virtually all substances associated with human activity that are discharged to water, regardless of whether the substances cause pollution or are produced through human endeavor. Therefore, “pollutant” is rarely a limiting element. Instead, the issues with the definition of “pollutant” primarily address whether it includes material used in common and productive activities, such as adding hatchery-raised fish (“biological material”) to trout streams or spraying pesticides to suppress disease-bearing mosquitoes (“biological material” or “chemical wastes”). EPA can easily fix these and other problems by a better regulatory definition

The Impact of Globalization on Pre-Industrial, Technologically Quiescent Economies

This paper uses a new pre-1940 Third World data base documenting real wages and relative factor prices to explore their determinants. There are three possibilities: external price shocks, factor endowment changes, and technological change. As the paper's title suggests, technological change is an unlikely explanation. The paper lays out an explicit econometric agenda for the future, although more casual empiricism suggests that external price shocks were doing most of the work, and declining-transport-cost-induced commodity price convergence in particular. Real wages in Asia, the Middle East, and Latin America never showed any signs of catching up with the European industrial leaders prior to 1914 hold their own. The ratio of wages to land rents, on the other hand, declined up to World War I and so did the ratio of wages to GDP per capita. The trend reversed thereafter. These relative factor price movements help sharpen our understanding of the sources of growth (or lack of it) in Asia and Latin America prior to 1940. They also offer strong hints about changes in income distribution there.

Future scientific exploration of Taurus-Littrow

The Apollo 17 site was surveyed with great skill and the collected samples have been studied thoroughly (but not completely) in the 20 years since. Ironically, the success of the field and sample studies makes the site an excellent candidate for a return mission. Rather than solving all the problems, the Apollo 17 mission provided a set of sophisticated questions that can be answered only by returning to the site and exploring further. This paper addresses the major unsolved problems in lunar science and points out the units at the Apollo 17 site that are most suitable for addressing each problem. It then discusses how crucial data can be obtained by robotic rovers and human field work. I conclude that, in general, the most important information can be obtained only by human exploration. The paper ends with some guesses about what we could have learned at the Apollo 17 site from a fairly sophisticated rover capable of in situ analyses, instead of sending people

The lunar environment and its effect on optical astronomy

The Moon's geologic environment features: (1) gravity field one-sixth that of Earth; (2) sidereal rotation period of 27.3 days; (3) surface with greater curvature than Earth's surface (a chord along a 10 km baseline would have a bulge of 7.2 m); (4) seismically and tidally stable platform on which to make astronomical observations (most moonquakes have magnitudes of 1 to 2 on the Richter scale, within the earth's seismic noise, resulting in ground motions only 1 nm); (5) tenuous atmosphere (the total mass at night is only 10(exp 4) kg) that has an optical depth of 10(exp -6) and does not cause wind induced stresses and vibrations on structures; (6) large diurnal temperature variation (100 to 385 K in equatorial regions), which telescopes must be designed to withstand; (7) weak magnetic field, ranging from 3 to 330 x 10(exp -9) T, compared to 3 x 10(exp -5) T on Earth at the equator; (8) surface exposed to radiation, the most dangerous of which are high energy (1 to 100 Mev) particles resulting from solar flares; (9) high flux of micrometeorites which are not slowed down from their cosmic velocities because of the lack of air (data indicate that microcraters greater than 10 microns across will form at the rate of 3000/sq m/yr); (10) regolith 2 to 30 m thick which blankets the entire lunar surface (this layer is fine-grained (average grain sizes range from 40 to 268 microns), has a low density (800 to 1000 kg/cu m in the upper few mm, rising to 1500 to 1800 kg/cu m at depths of 10 to 20 cm), is porous (35 to 45 pct), cohesive (0.1 to 1.0 kN/sq m), and has a low thermal diffusivity (0.7 to 1.0 x 110-8 sq m/sec); about 29 pct of the regolith is less than 20 micron in size (this dust could pose a hazard to optical telescopes); (11) rubbly upper several hundred meters in which intact bedrock is uncommon, especially in the lunar highlands; and (12) craters with diameter-to-depth ratios of 5 if fresh and less than km across (larger and eroded craters have diameter-to-depth ratios greater than 5)

Geological considerations for lunar telescopes

The geological features of the Moon that may be advantageous for astronomical observations are listed and described. The Moon's geologic environment offers wondrous opportunities for astronomy and presents fascinating challenges for engineers designing telescope facilities on the lunar surface. The geologic nature of the stark lunar surface and the Moon's tenuous atmosphere are summarized. The Moon as a stable platform is described as is its atmosphere, surface temperatures, its magnetic field, its regolith, and its crater morphologies

Demographic shocks and global factor flows

How economists view the impact of demography on economic events has changed a great deal over the past decade or so. When, in the late 1980s, Allen Kelley (1988) was writing his magisterial survey on the economic consequences of population growth in the Third World, the conventional wisdom was that Malthus did not matter much. Furthermore, the focus was on aggregate population growth. Since Kelley's 1988 survey, we have learned two important lessons that should have been obvious then, but were not: First, changes in the composition of the population often matter far more than changes in population aggregates; and second, when it comes to demographic impact, we need to think about long transitions rather than equilibrium steady states. These two lessons have taught us a great deal about the connection between demographic shocks and global factor flows--and even about growth.Demography ; Economic conditions

Globalization, Convergence and History

There were three epochs of growth experience after the mid 19th century for what is now called the OECD 'club'; the late 19th century, the middle years between 1914 and 1950, and the late 20th century. The late 19th and the late 20th century epochs were ones of overall fast growth and convergence: poor countries tended to grow even faster than rich and the economic gap between rich and poor countries diminished. The middle years were ones of overall slow growth and divergence: poor countries tended to grow even slower than rich and the economic gap between rich and poor countries widened. Since the middle years were also ones of economic autarky and 'de-globalization', while the rest were ones of increasing globalization in world commodity and factor markets, history offers an unambiguous positive correlation between globalization and convergence. But is the correlation spurious? When the pre-World War I years are examined in detail, the correlation turns out to be causal: the globalization of commodity and factor markets served to play a critical, perhaps the critical, role in contributing to convergence. A century and a half of OECD club history also suggests that economists should pay more attention to who gains and who loses from convergence since the answers may help determine whether pro-globalization or anti- globalization policies will persist.

Inequality and schooling responses to globalization forces: lessons from history

Given the intensity of the current debate about the impact of globalization on brain drain in the Third World and inequality in the First World, it might be useful to look at these forces during the first global century, ending in 1914. This paper reviews what we know about the impact of trade and mass migration on low-wage, labor-abundant European economies and high-wage, labor-scarce overseas New World economies. It reviews the distribution impact everywhere in the Atlantic economy, the extent of the European brain drain, and the schooling responses in both Europe and the United States.Emigration and immigration ; International trade ; Economic development ; Developing countries ; Human capital ; Globalization ; Education