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El resto del artículo, aquí.
Global warming may delay recovery of stratospheric ozone
Increasing greenhouse gases could delay, or even postpone indefinitely the recovery of stratospheric ozone in some regions of the Earth, a new study suggests. This change might take a toll on public health.
Darryn W. Waugh, an atmospheric scientist at Johns Hopkins University in Baltimore, and his colleagues report that climate change could provoke variations in the circulation of air in the lower stratosphere in tropical and southern mid-latitudes — a band of the Earth including Australia and Brazil. The circulation changes would cause ozone levels in these areas never to return to levels that were present before decline began, even after ozone-depleting substances have been wiped out from the atmosphere.
"Global warming causes changes in the speed that the air is transported into and through the lower stratosphere [in tropical and southern mid-latitudes]," says Waugh. "You're moving the air through it quicker, so less ozone gets formed." He and his team present their findings in the Feb. 5 Geophysical Research Letters, a publication of the American Geophysical Union (AGU).
Dan Lubin, an atmospheric scientist who has studied the relationship between ozone depletion and variations in the ultraviolet radiation that reaches the Earth, says Waugh's findings could bode ill for people living in the tropics and southern mid-latitudes.
If ozone levels never return to pre-1960 levels in those regions, "the risk of skin cancer for fair-skinned populations living in countries like Australia and New Zealand, and probably in Chile and Argentina too, will be greater in the 21st century than it was during the 20th century," says Lubin, who is at Scripps Institution of Oceanography in La Jolla, Calif. and did not participate in the research.
El resto, aquí.
Así que ya es oficial; "A legal alien in California" pasa a ser "A legal alien in Washington DC". Hubo un par o tres de semanas que ni siquiera era "a legal alien" sino más bien "an alien in limbo" por culpa de la poca eficiencia de los burócratas que tramitan los visados, pero por suerte eso ya pasó y los papeles en regla y bien, muchas gracias.
Nueva ciudad, nuevo trabajo (sí, trabajo, no prácticas. ¡Hola, vida adulta!) y nueva gente. Cuántas cosas voy a tener que contar...
1) Para Público:
“Está en perfectas condiciones, y es bastante raro porque, la mayoría de las veces, los calamares capturados han perdido algún tentáculo”, explica Clyde F. E. Roper, zoólogo emérito del Smithsonian.
2) Para Madri+d:
El puzzle de los presupuestos de ciencia de EE.UU.
Una mañana de junio, me encontré en el congreso de Estados Unidos, esperando que se celebrara una reunión de presupuestos que incluía, entre otros puntos, la financiación del gobierno federal para la National Science Foundation y la NASA para el año 2009. Iba como representante del Chronicle of Higher Education, en cuya sección de ciencia y tecnología estaba realizando prácticas de verano. No se trataba de una reunión crucial (por algo habían enviado a la becaria, y no al periodista que normalmente cubría política científica), pero eso no me importaba demasiado: el ir al congreso para cubrir un evento me proporcionaba una dosis de emoción más que suficiente.
Van Jones: For us, a green-collar job has to be a living-wage job and it has to be a real upper-mobility pathway. We don't believe the country needs "solar sweatshop jobs" or a "Walmart wind industry." We want to make sure that we have equal opportunity, which means creating real diversity from the beginning in this new economy. We want to make sure people have labor rights, so they can organize themselves and get the best possible deal. And we want to make sure these jobs represent an end to poverty.