A new study to be published online November 5 in the American Journal of Psychiatry casts a shadow on light therapy's status as the gold standard for treating SAD, or seasonal affective disorder. 

While the treatment was effective at addressing acute episodes of SAD, a SAD-tailored version of cognitive-behavioral therapy (CBT) was significantly better at preventing relapse in future winters, the study found. Led by University of Vermont psychology professor Kelly Rohan, the research initiative, funded by a $2 million grant from the National Institute of Mental Health, is the first large scale study to examine light therapy's effectiveness over time. 

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La tierra acaba de tener el más caluroso período enero - septiembre de la historia, dijo la Organización Meteorológica Mundial de las Naciones Unidas (OMM), añadiendo que las temperaturas medias del aire y del mar en septiembre registran el mayor aumento superior a la media mensual de 136 años.

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El área del agujero de ozono en el antártico, este 2015, es más grande y se formó más tarde que los agujeros anteriores, dijeron los científicos de la NASA y la Administración Nacional Oceánica y Atmosférica (NOAA).

El 2 de octubre de 2015 el agujero de ozono se expandió a su máximo de 28,2 millones de kilómetros cuadrados (10.9 millones de millas cuadradas), un área más grande que el continente de América del Norte. A lo largo de octubre el agujero mantuvo ese tamaño y estableció muchos...

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Germany's Volkswagen said Tuesday (3 November) an internal probe had found that 800,000 more vehicles showed "inconsistencies" on carbon dioxide emissions, including the first petrol engines.

Among the engines affected are 1.4, 1.6 and 2.0 litre motors of VW, Skoda, Audi and Seat vehicles, said a VW spokesman, adding that these cars had been found to be releasing more of greenhouse gas CO2 than previous tests had shown.

At least one petrol engine is concerned, the company said.

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Imagine you are a parent, and that out of the blue, you get a letter from your child's school telling you not to worry — that they're ready to evacuate or shelter in place if an underground fire at a nearby landfill reaches radioactive waste on the same property.

That's pretty much what happened recently in suburban St. Louis.

Landfill fires are pretty common. But this one is different: It's only about a thousand feet away from nearly 9,000 tons of nuclear waste — and there's no barrier in between.

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Annual snow accumulation on West Antarctica’s coastal ice sheet increased dramatically during the 20th century, according to a new study published today (Wednesday 4 November) in the American Geophysical Union journal Geophysical Research Letters. The last three decades saw more snow build up on the ice sheet than at any other time in the last 300 years.

The research gives scientists new insight into Antarctica’s ice sheet. Understanding how the ice sheet grows and shrinks over time enhances scientists’ understanding of the processes that impact global sea levels.

The new study used ice cores to estimate annual snow accumulation from 1712 to 2010 along the coastal West Antarctic. Until 1899, annual snow accumulation remained steady, averaging 33 and 40 centimeters (13 and 16 inches) water, or melted snow, each year at two locations.

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