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• S42.E1 ∙ Big Bang Machine
• S42.E2 ∙ Sunken Ship Rescue
• S42.E3 ∙ Sinkholes-Buried Alive
• S42.E4 ∙ Colosseum: Roman Death Trap
• S42.E5 ∙ Petra: Lost City of Stone
• S42.E6 ∙ Hagia Sophia: Istanbul's Mystery
• S42.E7 ∙ The Great Math Mystery
• S42.E8 ∙ Invisible Universe Revealed
• S42.E9 ∙ Nazi Attack on America
• S42.E10 ∙ Lethal Seas
• S42.E11 ∙ Chasing Pluto
• S42.E12 ∙ Nuclear Meltdown Disaster
• S42.E13 ∙ Dawn of Humanity
• S42.E14 ∙ Arctic Ghost Ship
• S42.E15 ∙ Secrets of Noah's Ark
• S42.E16 ∙ Cyberwar Threat
• S42.E17 ∙ Animal Mummies
• S42.E18 ∙ Making North America: Origins
• S42.E19 ∙ Making North America: Life
• S42.E20 ∙ Making North America: Human
• S42.E21 ∙ Inside Einstein's Mind