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A pesar de que las naciones latinoamericanas han realizado ingentes esfuerzos por tomarle la delantera al crimen organizado, son muy pocos los resultados concretos. Qué es lo que sucede? Por qué a pesar de tantos esfue...

In lake food webs, pelagic basal organisms such as bacteria and phytoplankton incorporate mercury (Hg2+) from the dissolved phase and pass the adsorbed and internalized Hg to higher trophic levels. This experimental inve...

Human nature predisposes us to maximize our accomplishments while making a concerted effort to balance resource expenditures so we achieve an optimal return on our efforts. All too often what this really means is that we...