How NASA vaporized a Mars probe with middle school math

In 1999, NASA lost a $125 million spacecraft at Mars because one team used inches and pounds and the other used metric. Tell the story of the Mars Climate Orbiter: the launch, the tiny unit mistake nobody caught, the moment it vanished behind Mars, and what NASA changed after.In 1999, NASA lost a $125 million spacecraft at Mars because one team used inches and pounds and the other used metric. Tell the story of the Mars Climate Orbiter: the launch, the tiny unit mistake nobody caught, the moment it vanished behind Mars, and what NASA changed after.