Los investigadores en Japón han diseñado una membrana con funciones avanzadas capaces de eliminar los gases nocivos de efecto invernadero de la atmósfera. Sus hallazgos, publicados en la revista británica Nature Communications, algún dÃa podrán contribuir a reducir las emisiones de gases de efecto invernadero y a tener los cielos más limpios.
Los gases de efecto invernadero, procedentes de los procesos...
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How can a manufacturer reformulate a cleaning product to contain fewer harmful chemicals, and how can a retailer stock its shelves with more eco-friendly merchandise? UL (Underwriters Laboratories), a product safety testing and certification company, thinks it may have a solution: a set of data tools that helps businesses search and choose ingredients and products based on their environmental and social responsibility profiles.
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This September 1 is the 100th anniversary of a landmark event in the history of biodiversity. On that day in 1914, at about one o'clock in the afternoon, Martha - the last surviving passenger pigeon - died at the Cincinnati Zoo. It is extraordinary to know with virtual certainty the day and hour when a species ceases to be a living entity. And it was a stunning development because less than half a century earlier, the passenger pigeon had been the most abundant bird in North America, if not the world.
As late as the 1860s, passenger pigeons had likely numbered in the billions, and their population was neither evenly distributed across the landscape
nor in any way subtle. These birds had a propensity for forming huge aggregations that are difficult to imagine today. John James Audubon, America's best-known student of birds, recorded a flight of passenger pigeons along the Ohio River in Kentucky that eclipsed the sun for three days. Other accounts, written over the course of three centuries and in several languages, testify to the birds darkening the sky for hours at a time over the major cities of the eastern third of the United States and Canada.
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Researchers in Japan have engineered a membrane with advanced features capable of removing harmful greenhouse gases from the atmosphere. Their findings, published in the British journal Nature Communications, may one day contribute to lower greenhouse gas emissions and cleaner skies.
Greenhouse gases, originating from industrial processes and the burning of fossil fuels, blanket the earth and are the culprits behind current global warming woes. The most abundant among them is carbon dioxide, which made up 84% of the United State's greenhouse gases in 2012, and can linger in Earth's atmosphere for up to thousands of years.
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