You should not use your fireplace, because scientists now...

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.