Cousteau's Mission 31 set out to study the effect of global warming on coral reefs, and to add a day to the 30-day underwater study his grandfather, Jacques-Yves Cousteau, conducted 50 years ago. The team, which just returned to the surface this week, collected enough data for at least 10 research papers on the subject.

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It's amazing to think what a different world lurks just 60-some feet below the ocean. [PBS; The Miami Herald]