Saturday Citations: Human impacts on reef systems; testing AI systems; a woman with perfect memory

The week in science: UK fishermen are reporting a massive octopus bloom in the waters off southwest England. Researchers found a massive fossilized pearl in the Australian outback, the largest ever found in the country. And physicists detailed an extremely high-efficiency heat engine that challenges two centuries of thermodynamic understanding. (It’s reported in Physical Review Letters, so it’s probably legit.)

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