What we learned this week

Sustainably caught tuna relies on a network of on-board observers. It’s a far more dangerous job than you might expect, with a pattern of observers dying or disappearing on the job under suspicious circumstances.

Finland is the country with the most advanced plans for dealing with nuclear waste. If it can ever be dealt with safely, it will be in facilities like Okiluoto Island. It’s taken 20 years and $1 billion to build it, deep under the mountain, and Erika Benke has been to see it.

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