In a significant victory for Prime Minister Tony Abbott, the Australian Senate has voted to repeal the country's two-year-old carbon tax. Abbott made dismantling the tax one of the cornerstones of his campaign last September even as Australia remains one of the highest carbon emitters per capita in the industrialized world.
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Un estudio que involucró a abejas con etiquetas de radiofrecuencia diminutas encontró que la exposición a largo plazo a un pesticida de neonicotinoides obstaculiza la capacidad de las abejas para buscar alimentarse de polen.
La investigación realizada por Nigel Raine, profesor de la Universidad de Guelph, y Richard Gill, del Imperial College de Londres, muestra cómo la exposición a pesticidas a largo plazo afecta el comportamiento individual de las abejas en el dÃa a dÃa, incluyendo la recolección de polen y flores que las abejas obreras escogen para visitar.
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El efecto de isla de calor urbano en Londres, que mantiene las temperaturas nocturnas en la capital más cálidas que en las zonas rurales circundantes, puede haber sido subestimado hasta en un 45 por ciento.
El calor puede plantear riesgos graves para la salud, especialmente para los ancianos y los muy jóvenes.
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The mystery behind the movements of flocking starlings could be explained by the areas of light and dark created as they fly, new research suggests. The research, conducted by the University of Warwick and published in the journal PNAS, found that flocking starlings aim to maintain an optimum density at which they can gather data on their surroundings. This occurs when they can see light through the flock at many angles, a state known as marginal opacity. The subsequent pattern of light and dark, formed as the birds attempt to achieve the necessary density, is what provides vital information to individual birds within the flock.
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Wind farming is one of the leading industries in the renewable energy sector. The process is simple: wind turns the blades, which spin a shaft, which connects to a generator and makes electricity. However, converting this kinetic energy into mechanical power has resulted in quite a few wind turbines catching fire, and according to researchers not all fires are being fully reported. Researchers from Imperial College London, the University of Edinburgh and SP Technical Research Institute of Sweden carried out a global assessment of the world's wind farms, which in total contain an estimated 200,000 turbines. The team found that ten times more fires are happening than are being reported. Instead of an average of 11.7 fires each year, which is what is reported publicly, the researchers estimate that more than 117 separate fires are breaking out in turbines annually.
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Residents of California have been noting something disconcerting when they hit the grocery store this year: it's a terrible year for stone fruit. Despite the fact that it's the height of summer, peaches, nectarines, apricots, plums, cherries and their ilk are much more expensive than unusual, and of much poorer quality, too. What's going on? The answer lies in the state's extreme drought, which wreaked havoc on numerous crops this year, including stone fruit. The state's agriculture may be undergoing some major shifts in the coming years thanks to climate change and natural shifts in rainfall levels, and it's not the only region looking at a drier future.
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