Mais notícias sobre o clima...

"The news from NOAA is that all our dawdling on climate action this decade is having real impact on the atmosphere:

• Concentrations of CO2 jumped 2.4 ppm in 2007, taking us to 385 ppm (preindustrial levels hovered around 280 through 1850).
• That is an increase of 0.6 percent (or 19 billion tons). If we stay at that growth rate, we'll be at 465 ppm by 2050 -- and that assumes (improbably) that the various carbon sinks don't keep saturating (see here and here).
• Levels of methane (a far more potent greenhouse gas than CO2) rose last year for the first time since 1998, perhaps an early indication of thawing permafrost [ver gráfico acima]. "

- ver em NOAA news isn't good news Gristmill: The environmental news blog Grist.