What do you do when you have a huge dilemma, and the number of people who can solve it is dwindling? That's the problem at the Hanford Nuclear Reservation -- one of the largest environmental cleanup projects in the world.
About 12,000 people are working on it right now. But the vast majority of Hanford's top experts are nearing retirement age. That leaves this complex cleanup task to the next generation.
The stakes are high: one wrong move could mean an environmental disaster, or a contaminated worker.
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