Alzheimer’s disease (AD) is one of the most devastating human pathologies. AD is the leading cause of age-related dementia and currently afflicts more than 44 million persons worldwide (World Alzheimer Report 2014). It is characterized by a cognitive decline and memory loss and by the appearance of two pathological hallmarks: beta amyloid plaques and cytoskeletal […]
Boron, in the periodical table situated in the 13 group (group III according to the former nomenclature), is a semiconductive element with properties between that of a metal and a nonmetal. Boron compounds are widely used materials in various branches of industry. Recent studies show its importance in biology as for example to various metabolic […]
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3D map shows the adolescent universe Astronomers have pieced together an image of what the adolescent universe looked like using just four hours of telescope observation time, producing a three-dimensional map. The map, millions of light-years across, shows areas of high-density matter that appear to be galaxies as they were just 3 billion years after […]
Yes, I talk to you, even more if you are one of those scientists working with any living being either unicellular or multicellular with sexual dimorphism seared in their chromosomes. Such a question may seem trivial. However, recent findings suggest that it is not so trifling, and that an affirmative answer could have major implications […]
Jones is a small city located in the state of Oklahoma, in the Central United States. In Science Magazine we can read that the town has one bar, three restaurants and nine churches. It looks like the perfect place for a truly peaceful holiday, doesn’t it? Too bad that our perception of Jones’s tranquility can […]
Nitrogen (N) is an essential nutrient for plant growth and most plants require 20-50 g of N taken up by their roots to produce 1 kg of dry biomass. Although N is one of the most abundant elements on earth, agricultural soils are deficient in N and thus, to sustain crops productivity soils require their […]
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Breaking waves provide some warmth to surf zones Breaking waves warm the water in the surf, and in some cases may provide more heat than sunshine. Scientists said that in areas like the Pacific Northwest, which have more powerful waves and cloudy skies, heating could be almost three times stronger that what the sun provides […]
This is the English version of a section in Ferreira (2014) , a paper dedicated to overview the experiments in Industrial Organization, to appear in Revista de Economía Industrial, and is reproduced here with the permission of the journal. The great majority of water collection and distribution in the world rely on a central authority […]
An old problem, restated by Martin Gardner in 1959, asked if six cigarettes that can be placed so that each touches the other. Gardner was surprised by fifteen readers discovering that actually seven cigarettes can be arranged with that condition . Some years later, in 1968, Littlewood raised the question if it possible in 3-space […]
It is possible that we know more about the cause of skin cancer than about any other type of cancer. The link between sun exposure (UV radiation) and the development of skin cancer is solidly established. And yet, the incidence of this disease is increasing year after year with a steepest slope than any other […]