At 04:27 AM 3/1/99 -0500, Doug wrote:
 I don't know the exact chemical reactions, but it
has to do with the type
of rubber used:
        natural rubber + O2 -> goo
        foam rubber + O2 -> dust
        synthetic rubber + O2 -> harder synthetic rubber
or something like that.... 
Is that really O2 or is it O3 (ie Ozone)?
--Chuck