By 2100, over 13 billion people could be walking the planet. That's the conclusion of a new study published today in Science, which employed UN data to explore the probability of various population scenarios. The new study further demolishes the long-held theory that human population growth will quit growing by mid-century and then fall. "Analysis of these data reveals that, contrary to previous literature, world population is unlikely to stop growing this century," reads the paper.
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Los hallazgos por la profesora de la Universidad de Montana, la Dra. Lilian Calderón-Garcidueñas, MA, MD, Ph.D., y su equipo de investigadores revelan que los niños que viven en las grandes ciudades tienen un mayor riesgo de inflamación cerebral y cambios neuro-degenerativos, incluyendo las enfermedades de Alzheimer y Parkinson.
Los hallazgos de Calderón-Garcidueñas se detallan en un documento titulado "La contaminación del aire y los niños: Anticuerpos neurales y de uniones estrechas, y la combustión de metales, el papel de la ruptura de la barrera y la inmunidad del cerebro en la neuro-degeneración."
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Depictions of animals in ancient Egyptian artefacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable.
The study, published in Proceedings of the National Academy of Sciences (PNAS), found that local extinctions of mammal species led to a steady decline in the stability of the animal communities in the Nile Valley.
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The prime cod fishing grounds of North America have been depleted or wiped out by overfishing and poor management. But in Arctic waters, Norway and Russia are working cooperatively to sustain a highly productive — and profitable - northern cod fishery.
What years of dwelling in the cold Atlantic had amassed, an army of knife-wielding, white-suited Norwegian factory workers were taking apart in just minutes. In a consummate display of optimization, streams of fish parts were whisked along on conveyor belts around and above me, with various cuts destined for their most appropriate markets. Nothing was wasted.
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