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If you go to the beach, you can spend hours watching the waterline rise and fall as the day wears on. There are two of these tides each day, but what causes tides and why are there two of them each day? Find out in this article.
In "The Raiders of the Lost Ark," Indiana Jones competes with grave-robbing Nazis for the lost Ark of the Covenant. But what defined Dr. Jones as legit and the Nazis as grave robbers?