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Un nuevo proceso catalítico es capaz de convertir lo que antes se consideraba residuos de biomasa en productos químicos útiles que se pueden utilizar en perfumes, para elaborar bases para aromas o para crear combustible de alto octanaje para autos de carreras y aviones.

Un equipo de investigadores del Centro para la conversión Catalítica Directa de Biomasa en Combustibles, de la Universidad de Purdue, o C3Bio, ha desarrollado un proceso que utiliza un catalizador químico y calor para estimular reacciones que convierten la lignina en sustancias químicas valiosas. La lignina es una molécula resistente y de gran complejidad que le da a la célula vegetal su pared de estructura rígida.

If it seemed like Oregon has had a lot of unseasonably warm days this winter, well, it’s because we have. Now the focus is on a very low snowpack – and the implications that may have later this year.

The meteorological winter – which is comprised of December, January and February – recently wrapped up and depending on where you live in Oregon, it was one of the warmest – if not the warmest – winters on record.

It's March. It's freezing. And there's half a foot of snow on the ground. When is this winter going to end?

Many scientists think that climate change might be one cause of this year's "snowpocalypse" in Boston and bitter cold snaps in New York and Washington.

But physicists at NASA's Jet Propulsion Laboratory have been looking into another culprit: air pollution in China and India.

Ha sido necesario ocupar cinco meses del satélite más nuevo de la NASA, para monitorear el dióxido de carbono, haciendo hasta 1 millón de mediciones al día de cómo se mueve el dióxido de carbono en todo el planeta. Ahora los científicos de la NASA han compartido los primeros mapas globales creados con esos datos, que muestran una de las vistas más detalladas de CO2 jamás creados.

El satélite, conocido como OCO-2, ha estado en órbita desde julio...

The U.S. Fish and Wildlife Service today proposed to protect 338,100 acres of critical habitat in Mississippi and Alabama for black pine snakes, whose southeastern, longleaf pine forests have been reduced to less than 5 percent of their historic extent. The snake depends on these forests, which are being lost to agriculture and pine plantations, fire suppression and urbanization. Black pine snakes were proposed for Endangered Species Act protection last fall as the result of a settlement agreement with the Center for Biological Diversity that speeds protection decisions for 757 imperiled species around the country.