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lifespan of cds and dvds

how long will burnable cds and dvds last? no one really knows because the materials used to manufacter cd/dvds change all the time, thus rendering any scientific study useless. However, here are some interesting tidbits I pulled from the article.
-if you write on your cds, the pressure of your marker/pen may dent the sensitive aluminum data layer which could shorten the life of your disc.
-bending a cd/dvd from its case can shorten the lifespan because it strains the glue in the disc
-rewriteable discs (vs. write-once discs) decay faster because they contain a heat-sensitive layer that decays faster tan the metal layers of write-once discs.

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Matt Maldre
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WHATEVER YOU DO, DON’T LEAVE THEM IN YOUR CAR ON A HOT SUMMER DAY!!!