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NOVA: 42x20
Lethal Seas
Sharply rising carbon emissions are entering Earth’s seas at a staggering rate, raising their acidity. Learn how scientists are researching the effects and looking for solutions.
42 - 1Vaccines Calling the Shots Sep. 10, 2014
42 - 2Rise of the Hackers Sep. 24, 2014
42 - 4Surviving Ebola Oct. 08, 2014
42 - 6First Air War Oct. 29, 2014
42 - 12Sunken Ship Rescue Jan. 21, 2015
42 - 15Petra: Lost City of Stone Feb. 18, 2015
42 - 17The Great Math Mystery Apr. 15, 2015
42 - 20Lethal Seas May. 13, 2015
42 - 21Chasing Pluto Jul. 15, 2015
42 - 22Nuclear Meltdown Disaster Jul. 29, 2015