E continua....

"CO2 levels (parts per million) over the past 10,000 years. Blue line from Taylor Dome ice cores (NOAA). Green line from Law Dome ice core (CDIAC). Red line from direct measurements at Mauna Loa, Hawaii (NOAA)."

Ciência:

• Is CO2 a pollutant?: "We commonly think of pollutants as contaminants that make the environment dirty or impure. A vivid example is sulphur dioxide, a by-product of industrial activity. High levels of sulphur dioxide cause breathing problems. Too much causes acid rain. Sulphur dioxide has a direct effect on health and the environment. Carbon dioxide, on the other hand, is a naturally occuring gas that existed in the atmosphere long before humans. Plants need it to survive. The CO2 greenhouse effect keeps our climate from freezing over. How can CO2 be considered a pollutant?"

Distracções e pulhices:

• Glenn Beck: “There aren’t enough knives” for “dishonored” climate scientists to kill themselves. « Climate Progress 

• The Distracting Debate Over Climate Certainty - Dot Earth Blog - NYTimes.com: "Several Dot Earth readers have weighed in with useful thoughts on how much of this tussle over certainty is a distraction — perhaps in some cases an intended one, aimed to further delay an intensified push for a post-fossil energy menu. [...]" 

Clima e tempo:

• Wunder Blog : Weather Underground: "Heavy snow events--a contradiction to global warming theory? As I discussed in my previous post, record-breaking snowstorms are not an indication that global warming is not occurring. In fact, we can expect there may be more heavy snowstorms in regions where it is cold enough to snow, due to the extra moisture global warming has added to the atmosphere--an extra 4% since 1970. Snow is not the same as cold, and we have to look at global temperatures, not snowfall, to evaluate whether global warming is occurring."

• D.C. Snowstorm: How Global Warming Makes Blizzards Worse - TIME

Factos:

• Climate Feedback: Antarctic glacier PIG is unstable, suggests new study

• How green is China? | vox - Research-based policy analysis and commentary from leading economists: "China’s economic growth has profound environmental implications. This column estimates the household carbon emissions of China’s major cities. Even in China’s most polluting city, per household emissions are just one-fifth of those in San Diego, the greenest city in the US."