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we announced last week, and here is that the event occurred: the concentration of carbon dioxide in the atmosphere has exceeded the ‘psychological’ of 400 ppm. To say they are measurements of the NOAA weather center in Hawaii, which recorded a value that had not been touched in the last three million years. The record is the mean value measured in the day on May 9, considered by scholars to more reliable: 400.03 ppm CO2.
Into Although this is a symbolic threshold, experts and environmental groups, emphasize that the value is a testimony of how greenhouse gases are increasing, which has far exceeded expectations. 
trend last year of NOAA surveys
Into These are the signs of Greenpeace:
Into “If greenhouse gas emissions continue at this pace the planet will reach 1,000 ppm within 100 years, when in fact, increases the concentration of only 10 ppm required, in past ages more ‘intense changes climate, a thousand or more years’. A very high level which is yet another wake-up call to climate change going on in the planet. “
Into The blame for all this is to us humans, due to global climate pollution that comes from the energy sector, in particular fossil fuels. Assuming that the carbon dioxide levels continue to rise, experts predict that the record temperatures that are now recorded in a not too distant future will become the new average summer. Among the consequences more pessimistic, the drought of the land and you can watch more and more often to storms and floods.
The head of WWF Italy Midulla warns that, globally, “communities and governments already struggling to respond to drought, poor harvests and extreme weather events, even in rich countries like the United States” He warned that if CO2 levels continue to rise “will become increasingly difficult and unlikely to adapt to climate change.”
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