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Politics : PRESIDENT GEORGE W. BUSH -- Ignore unavailable to you. Want to Upgrade?

To: DMaA who wrote (141454)	4/30/2001 6:23:51 PM
From: Scumbria	Read Replies (2) \| Respond to of 769667

DMA, Most environmental problems onset slowly, allowing us time to take action. If we are smart enough to do so. Cancer isn't quite as funny as you represent it to be. There is also serious concern about depletion of stratospheric ozone by manmade chlorofluorocarbons (CFC). These extraordinarily inert chemicals are used in numerous commercial products, including aerosols and refrigerants. The U.S. Environmental Protection Agency has been charged with estimating the effects on health associated with changes in stratospheric ozone levels. In a recent risk assessment document, the Agency predicted that without controls on CFC production, there would be a 40 percent depletion of ozone by the year 2075. The Agency further concluded that for every 1 percent decrease in ozone, there will be a compounded 2 percent increase in the more damaging shorter UVB wavelengths reaching the Earth's surface. Such an increase in UVB penetration to the earth is predicted to result in an additional 1 to 3 percent increase per year in nonmelanoma skin cancer (NMSC). Recent satellite measurements already indicate a worldwide decrease in stratospheric ozone over the last decade. Both satellite- and land-based measurements have revealed a seasonal hole in the ozone layer over the Antarctic secondary to its destruction by CFC's. Although increased surface UVB has been measured in the Antarctic, there has not yet been a measurable change in UVB as a consequence of CFC's in the stratosphere in the United States. text.nlm.nih.gov