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From deep-sea danger to mega holiday cruises, helping rivers flow and harvesting power, this program goes deep, unlocking the ultimate challenges of our water planet.
2008
0.0
2021
7.5
7.0
1997
2017
8.5
2022
2013
7.3
1998
6.0
1977
6.3
1959
1974
1.0
1996
1991
7.4
1965
5.9