The massive oil spill currently flooding the Gulf of Mexico should have been prevented by a fail-safe device called a Blowout Preventer, or BOP. Find out how this safety mechanism is supposed to work -- and why it didn't -- in this episode.
Welcome to the daily audio workout for your head. Every day we have two games for you, each with three rounds which get progressively harder. To enjoy the full experience avoid distractions whilst you listen.
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