With supermarket milk cheaper than spring water, it's time to rethink the modern dairy industry. It's not just the milk that's become a throwaway product - the high-octane Holstein cows that produce it are also in the knackers yard after just two or three lactations, the living waste of a loss-making, environment-trashing industry.
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Sandy Oliviera has raised monarch butterflies in her East Providence backyard for 25 years. In 1998, she helped 125 monarch caterpillars transform into butterflies, and then released them to the wind. "I began to feel like a butterfly factory that year," Oliviera said. Each time her husband or daughter collected milkweed to feed their captive caterpillars, they returned with more eggs or caterpillars to raise. Some days, Oliviera released a dozen newly emerged butterflies, to the pleasure of her 8-year-old grandson who let them rest on his head before they flew away. This summer, for the first time, Oliviera hasn't found a single monarch egg or caterpillar, and hasn't seen any monarch butterflies.
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La incineración o quema de cualquier combustible deja como residuo una serie de gases que propician el calentamiento global, sin embargo Altos Hornos de México (AHMSA) convino con Naciones Unidas un sistema de quema de gas metano en sus minas de carbón que disminuye en forma importante el impacto al medio ambiente. AHMSA informa que para explotar un yacimiento de carbón, anticipadamente se le extrae el gas metano por barrenación para salvaguardar la seguridad de los trabajadores. Si este gas se descarga a la atmósfera producirá un efecto de calentamiento atmosférico mayor al que pueden ocasionar otros gases, ya que el metano es un gas de efecto invernadero, que si se deja escapar a la atmósfera atrapa calor en cantidades mayores a otros gases, pues tiene un índice de Potencial de Calentamiento Global (GWP por sus siglas en inglés) mayor que el CO2. El GWP es una medida relativa de cuánto calor puede ser atrapado por un determinado gas de efecto invernadero en comparación con un gas de referencia, por lo general el dióxido de carbono o CO2.
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Many homeowners strive to have the picture-perfect green lawn. But how can that be achieved in an environment where water in parts of the country is becoming scarce and the use of pesticides and fertilizer is being discouraged? Researchers from two Big Ten universities hope that they will be able to find an answer. Scientists from Rutgers University and the University of Minnesota, both members of the Committee on Institutional Cooperation – an academic consortium of Big Ten universities – will be working together over the next five years to develop an environmentally friendly grass that is more resistant to disease and drought and a better economical choice for homeowners.
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The food chain is a hierarchical series of organisms that are interrelated in their feeding habits. The chain starts when the smallest being like an insect is fed upon a larger prey species, which in turn feeds an even larger species. So if a species among the lower ranks of the chain has accumulated toxins such as pesticides or other organic chemicals, there is potential for these toxic substances to affect the species that prey upon them. This is the subject of new research conducted by the US Geological survey that found when fish feed on insects and when other wildlife species feed on fish, harmful contaminants are transferred up the line.
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Deepwater Wind has received the final federal approval needed to build the Block Island Wind Farm — a project that remains on-track to be the nation’s first offshore wind farm. The project’s lead federal permitting agency, the Army Corps of Engineers, granted its approval Sept. 5. With the Corps’ permit, the Block Island Wind Farm has now been completely reviewed, and approved, by nine state and federal agencies: Army Corps of Engineers, Federal Aviation Administration, U.S. Fish & Wildlife Service, National Oceanic and Atmospheric Administration, Environmental Protection Agency, Coast Guard, Rhode Island Coastal Resources Management Council, Rhode Island Department of Environmental Management and the Rhode Island State Historic Preservation Office.
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