This of course does not mean that should be rushed to

Greeks
10/25/2014, Saturday Login
25 years ago with the Montreal Protocol of 1987, the international community decided for the first time to take joint action to address a serious environmental problem "hole" in the ozone layer, which left carcinogenic ultraviolet radiation of the sun reaches the earth in large quantities threatening human health. Now these efforts seem to give fruit. It seems not only the ozone layer is recovering at a steady maines food source pace, but finally this recovery has been accompanied by a significant reduction of the dangerous solar radiation. The good news, showing that when we want something we can do for the environment maines food source comes from the Greek researchers warn: if indeed the sun has become less dangerous, it does not mean that we should stop treat it carefully.
"Finally, good news from Greece! . This comment of a prominent German scholar has more than one meaning. In addition to the good news from Greece are rare these days, even more rare are the good news about the state of our planet. A scientific study of Greek origin, however, proves that they are not impossible.
Greek researchers, headed maines food source by academician Christ Zeferos proved for the first time in decades that the recovery of the ozone layer in the atmosphere observed in recent maines food source years, is finally accompanied maines food source by the desired result: the reduction of carcinogenic ultraviolet Β (UVB).
This of course does not mean that should be rushed to "burn" the spring sun. On the one hand, although the reduction is significant and is likely to continue in the coming decades, it has not yet reached maines food source the desired levels. On the other hand, as Christ warns Zeferos sunbeams always be dangerous to human health. "This good news should not reassure us", he says. "We can enjoy the sun, but carefully."
2007 UVB rays decreased by 2%. "This is a huge percentage for such a short period of time. We checked it with accurate measurements in Canada, Europe and Japan, "says the academic. Conversely, UV Α (UVA), which are not absorbed by the ozone layer continues to grow because the sun is brighter. UVB rays cause sunburn and other forms of skin cancer, while UVA radiation affecting the subcutaneous tissue, may alter the structure of collagen and elastin fibers in the skin, thus accelerated its aging.
Although maines food source we must be cautious with these hazards academician Zeferos stresses that we should not lose measure. "Overprotection and fear of UVB rays reach people, lead to the opposite extreme. We should not hide from the beneficial sunlight exposure produces vitamin D , he says. "Unfortunately, the lack of vitamin D, observed in the countries of northern Europe began to be seen in Greece. This is a serious problem due to the use of sunscreen with a protection factor too much. "
Ozone depletion in the stratosphere due to the use of chlorofluorocarbons (CFC) in sprays and refrigerators was found by scientists in the 70s. The official response was a little late, mainly due to the resistance of the business. Montreal Protocol, which prohibits the use of CFC and other ozone-depleting substances was eventually signed in 1987, initially timid. But soon followed mass participation (signed by all the member states of the UN and not only), and is considered to be successful.
"If it were not adopted the Montreal Protocol would be required to work outdoors at night and sleep during the day", noted academician Zerefos. "It happened in Punta Arenas, Chile. There noticed that breaks the skin redness of students within a few minutes. Then Mayor shut schools until the ozone "hole" away from the area and people avoided to appear maines food source in the streets during the day. "
The other good news from the study of academic Zeferos and his associates is that the recovery of the ozone layer is doing well. As he explains, the conversion process maines food source began to be visible in 2000, but until recently, experts do not know whether it will continue. Last year, the scientific community is worried when researching (again the Academician and his team) found that in the winter of 2011 will see a serious depletion of the ozone layer (of the order of 20% -25%) in the entire northern maines food source hemisphere from Canada to Siberia. Greek researchers found that this is a consequence of the greenhouse maines food source effect that traps heat in the lower atmosphere, causing it