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La acidificación del suelo de la lluvia ácida que es perjudicial para las plantas y la vida acuática ya ha comenzado a revertir en los bosques del noreste de Estados Unidos y el este de Canadá, de acuerdo con una colaboración estadounidense-canadiense de cinco instituciones dirigidas por el Servicio Geológico de Estados Unidos (USGS por sus siglas en inglés)

La nueva investigación muestra que estos cambios están estrechamente vinculados a la disminución de lluvia ácida, aunque algunos resultados difieren de las respuestas esperadas.

Landmark research by The George Institute for Global Health has found that exercise can save lives, with an increase in the number of steps walked each day having a direct correlation with long term mortality.

Study author Professor Terry Dwyer said this was the first time research had been able to make the link between exercise, measured directly through pedometers, and reduced mortality over time in people who appeared healthy at the outset.

'Inactivity is a major public health problem, with conditions like obesity costing the economy tens of billions of dollars every year,' Prof Dwyer said. 'This shows more clearly than before that the total amount of activity also affects life expectancy.

Diets high in meat may lead to an increased risk of developing renal cell carcinoma (RCC) through intake of carcinogenic compounds created by certain cooking techniques, such as barbecuing and pan-frying. As part of a new study from The University of Texas MD Anderson Cancer Center, published online this week in the journal CANCER, researchers also discovered that individuals with specific genetic mutations are more susceptible to the harmful compounds created when cooking at high temperatures.

La alemana Volkswagen dijo el martes 3 de noviembre, que una investigación interna había encontrado que más de 800,000 vehículos mostraron "inconsistencias" en las emisiones de dióxido de carbono, incluyendo los primeros motores de gasolina.

Entre los motores afectados son los de 1.4, 1.6 y 2.0 litros, motores de VW, Skoda, Audi y Seat, dijo un portavoz de VW y añadió que se había encontrado que estos coches liberaban más CO2, gas de efecto invernadero, que lo que las pruebas anteriores habían mostrado. Por lo menos a lo que un motor de gasolina se refiere, según la compañía.

Though cycling to work has the potential to reduce your carbon footprint and improve your overall health, you’re probably not doing it. In many communities, bike lanes simply don’t exist, making it difficult or downright dangerous to battle automobile traffic to bike to work.

Cities like Washington, D.C., and New York have installed bike paths for commuters, and the investment has paid off. In D.C., bike commuting has increased by 120 percent, and in New York ridership has doubled, all thanks to offering cyclists appropriate infrastructure. While it’s certainly good news, the sad fact remains that the U.S. still lags far behind European nations when it comes to bicycle commuting.

A tale of two continents