You should not use your fireplace, because scientists now believe that,

You should not use your fireplace, because scientists now believe that,
contrary to popular opinion, fireplaces actually remove heat from
houses. Really, that's what scientists believe. In fact many
scientists actually use their fireplaces to cool their houses in the
summer. If you visit a scientist's house on a sultry August day,
you'll find a cheerful fire roaring on the hearth and the scientist
sitting nearby, remarking on how cool he is and drinking heavily.
-- Dave Barry, "Postpetroleum Guzzler"

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