Global carbon dioxide concentration hit record high in MarchGlobal average concentration of carbon dioxide in the atmosphere reached a new record high in March 2015, soaring to surpass 400 parts per million, scientists revealed on Wednesday.The news came as a reminder that the international community has failed to come up with meaningful solutions to reverse the trend in greenhouse gas emissions that are a direct cause of global warming.The average in atmosphere carbon dioxide concentration observed in March has not been seen by scientists since NOAA monitoring started in 1957.And scientific evidence suggests that these levels have been unseen for the entire history of human civilization as we know it.With the dawn of the industrial age, carbon dioxide concentration levels in the atmosphere began to climb, going from 280 parts per million in 1800 to 290 parts per million in 1900. In the last century alone, the rise in concentration is one that would normally be expected to happen over the course of 10,000 or 20,000 years.This March, the International Energy Agency reported that greenhouse gas emissions had plateaued over the last two years, stopping an upward trend.Emissions may have stagnated, but the degree of carbon dioxide concentration in the atmosphere – a direct cause for global warming – is continuing to rise.Current global emissions would have to be reduced by a momentous 80% in order to stop carbon dioxide concentration in its upward trend. Even if emissions came to a halt altogether, it would likely take hundreds, if not thousands, of years for concentration levels to come back down to desirable rates.
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