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Article #1102Re: Bashford says: Ozone confuses me.
From: Greig Ebeling
Date: Thu, 20 Feb 1997 00:00
Date: Thu, 20 Feb 1997 00:00
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Fred Pribac <fred@vortex.shm.monash.edu.au> wrote: >Epidemiological studies suggest that incidence of skin cancer >has been rising in australia over the past 40 years. True. >Surface measurements of UV also show upward trends over later >decades. There is some speculation regarding the relevance of this, considering that UV increases are greater in high lats, where natural UV levels are low, and also that higher surface UVR does not necessarily translate into higher exposure, considering sunwise trends, and blockout. >Given that early exposure to UV has been linked to increased >incidence of skin cancer in later life - it is reasonable to >guess that these trends may be correlated. Actually it is far more likely that it was caused by the suntanning trend of the late 60s and 70s. This is obvious from the fact that skin cancer has a long latency period. Also, ozone depletion has only occurred at a significant degree in the last 10 years. Any correlation between UV-B exposure and increases in cancer would need to show a recent increase. This is not shown in the data I have seen. ...Greig
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10df0c,a7a84d47f994444 X-Google-Attributes: gid10df0c,public X-Google-Thread: fb58e,a7a84d47f994444 X-Google-Attributes: gidfb58e,public X-Google-Thread: 10c480,a7a84d47f994444 X-Google-Attributes: gid10c480,public X-Google-Thread: fdaee,a7a84d47f994444 X-Google-Attributes: gidfdaee,public X-Google-Thread: 10607c,a7a84d47f994444 X-Google-Attributes: gid10607c,public From: eggsoft@sydney.dialix.oz.au (Greig Ebeling) Subject: Re: Bashford says: Ozone confuses me. Date: 1997/02/20 Message-ID: <5ehhg0$ich$5@coffee.DIALix.COM> X-Deja-AN: 220155892 References: <5cr1ob$1rl$1@coffee.DIALix.COM> <5ctpfe$d7q@usenet.rpi.edu> <5d4efo$72t$1@coffee.DIALix.COM> <32F9EA98.41C6@bas.ac.uk> <5dgb4i$sj$1@coffee.DIALix.COM> <32FF14A5.41C6@bas.ac.uk> <5dumu4$1he$8@coffee.DIALix.COM> <3303BD5B.11D6@qmail.com> <5e3fnb$gvs$1@coffee.DIALix.COM> <33073CF6.250C@qmail.com> <5ec6ip$apb$1@coffee.DIALix.COM> <330A4478.6430@ilhawaii.net> <5eepj0$e0o$9@coffee.DIALix.COM> <330B373E.1EE9@ilhawaii.net> <330BB12A.41C6@vortex.shm.monash.edu.au> Organization: DIALix Services, Sydney, Australia. Newsgroups: talk.environment,sci.environment,aus.politics,aus.environment.conservation,aus.environment.misc