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Often mowed and doused with herbicides, power transmission lines have long been a bane for environmentalists. But that’s changing, as some utilities are starting to manage these areas as potentially valuable corridors for threatened wildlife. Nobody loves electrical power transmission lines. They typically bulldoze across the countryside like a clearcut, 150 feet wide and scores or hundreds integrated vegetation management in right-of-way scores or hundreds of miles long, in a straight line that defies everything we know about nature. They’re commonly criticized for fragmenting forests and other natural habitats and for causing collisions and electrocutions for some birds. Power lines also have raised the specter, in the minds of anxious neighbors, of illnesses induced by electromagnetic fields. So it's a little startling to hear wildlife biologists proposing that properly managed transmission lines, and even natural gas and oil pipeline rights-of-way, could be the last best hope for many birds, pollinators, and other species that are otherwise dramatically declining.
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Offshore wind power is a valuable source of renewable energy that can help reduce carbon emissions. Technological advances are allowing higher capacity turbines to be installed in deeper water, but there is still much unknown about the effects on the environment. In a recent paper, University of Maryland Center for Environmental Science researcher Helen Bailey and colleagues review the potential impacts of offshore wind developments on marine species and make recommendations for future monitoring and assessment as interest in offshore wind energy grows around the world.
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Si los científicos quieren que el público confíe en sus sugerencias de investigación, es posible que quieran parecer un poco más "cálidos", según un nuevo estudio publicado por la Escuela Woodrow Wilson de Asuntos Públicos e Internacionales de la Universidad de Princeton, EEUU. El estudio, publicado en las Actas de la Academia Nacional de Ciencias (PNAS), muestra que mientras los estadounidenses ven a los científicos como competentes, creen que no son de confianza por completo. Esto puede ser debido a que no se perciben como amables o cálidos. Susan Fiske, de la escuela Wilson, encontró que los científicos han ganado el respeto de los estadounidenses pero no necesariamente su confianza.
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Which kind of power is the cheapest? Listen to energy companies, and they'll insist that traditional forms like gas and coal are the way to go. Of course, they have money invested in keeping the existing systems in business. That's why the European Union commissioned an independent analysis to study the topic. According to the report, wind energy is the most cost-efficient way to supply power. When proponents of non-renewable energy point to costs, they intentionally overlook the overall economic impact that polluting causes. Once experts start to calculate the costs associated with public health and climate change that coincide with burning coal and gas, the true cost is far higher than initially reported. It's both irresponsible and shortsighted to ignore these environmental and health consequences from the equation.

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Los investigadores se dispusieron a examinar cómo las aves como águilas, buitres y milanos, son capaces de volar en condiciones de viento turbulento con rachas que mantendrían una avioneta en tierra. Le dieron a un águila de la estepa (Aquila nipalensis) cautiva, llamado 'Cosaco', su propia mochila con un registrador de vuelo:un cuadro negro de 75g que incorpora un GPS, que también mide la aceleración, la velocidad de rotación y la velocidad aérea, y la grabaron volando sobre el Brecon Beacons en Gales.
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Las aguas frías del océano profundo de la Tierra no se han calentado perceptiblemente desde 2005, según un nuevo estudio de la NASA, dejando sin resolver el misterio de por qué el calentamiento global parece haber disminuido en los últimos años. Los científicos del Laboratorio de Propulsión a Chorro de la NASA (JPL) en Pasadena, California, analizaron datos de satélite y de temperatura directa del mar desde 2005 hasta 2013 y encontraron que el abismo del océano por debajo de 1.24 millas (1,995 metros) no se ha calentado de manera perceptible. El coautor del estudio Josh Willis, del JPL, dijo estas conclusiones no arrojan sospechas sobre el propio cambio climático. "El nivel del mar sigue aumentando", señaló Willis. "Estamos tratando de entender los detalles esenciales."
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  1. Abundant natural gas will not slow climate change according to new study
  2. Can renewables supply 100% of world's power by 2050?

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Sustainability

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