Sequence of events DURING the 1999/2000 influenza outbreak, a 53-year-old man consulted because of a persistent productive cough that followed a flu-like illness. The patient was examined and prescribed erythromycin (Erymax® [Elan]) capsules. He made it very clear that he had a previous history of aspirin allergy and was reassured that there was no known cross-sensitivity between erythromycin a...

~ Riparian lands are among the most productive ecosystems on earth. They occupy only a small proportion of the landscape but frequently support a greater variety and abundance of animal life than adjacent habitats. ~ Important habitat components include vegetation (often taller, denser, more diverse, and more complex in riparian lands), food, standing water, shelter from predators, sites for ne...

Lands can be "less favored" by nature or by man for many reasons. Some areas, often on hillsides, have soils that are at risk for degradation but could produce good crops under certain conditions. Others have soils that are so poor farmers cannot even think about growing crops there. Others have productive soils but are inaccessible and need infrastructure like roads to make it worthwhile for f...

International efforts to mitigate human-caused changes in the Earth's climate are considering a system of incentives (debits and credits) that would encourage specific changes in land use that can help to reduce the atmospheric concentration of carbon dioxide. The two primary land-based activities that would help to minimize atmospheric carbon dioxide are carbon storage in the terrestrial biosp...

Although, it is occupying quantitavely a marginal place among the domestic herbivorous (0.4% only of the world domestic herbivorous), the large camelids (dromedary and Bactrian) are present in almost all the arid lands of the old world (except in Southern Africa), being wide spreading over 35 million km2. They are overall remarkable valorizators of these spaces by their productive potential and...

Governments can tax productive activities with either uniform or discriminatory rates among taxpayers. Although discriminatory rates can cause productive inefficiency and require high cost of administration, they can be preferred because of their advantage in distributional flexibility. This paper studies the discriminatory taxation of production in the Fertile Crescent. Using information from ...

Surface coal mining in Appalachia has caused extensive replacement of forest with non-forested land cover, much of which is unmanaged and unproductive. Although forested ecosystems are valued by society for both marketable products and ecosystem services, forests have not been restored on most Appalachian mined lands because traditional reclamation practices, encouraged by regulatory policies, ...