NOVA — Season 42

E01 Big Bang Machine 14 Jan 2015 E02 Sunken Ship Rescue 21 Jan 2015 E03 Sinkholes—Buried Alive 28 Jan 2015 E04 Colosseum: Roman Death Trap 11 Feb 2015 E05 Petra: Lost City of Stone 18 Feb 2015 E06 Hagia Sophia: Istanbul’s Ancient Mystery 25 Feb 2015 E07 The Great Math Mystery 15 Apr 2015 E08 Invisible Universe Revealed 22 Apr 2015 E09 Nazi Attack on America 06 May 2015 E10 Lethal Seas 13 May 2015 E11 Chasing Pluto 15 Jul 2015 E12 Nuclear Meltdown Disaster 29 Jul 2015 E13 Dawn of Humanity 16 Sep 2015 E14 Arctic Ghost Ship 23 Sep 2015 E15 Secrets of Noah's Ark 07 Oct 2015 E16 Cyberwar Threat 14 Oct 2015 E17 Animal Mummies 28 Oct 2015 E18 Making North America: Origins 04 Nov 2015 E19 Making North America: Life 11 Nov 2015 E20 Making North America: Human 18 Nov 2015 E21 Inside Einstein's Mind 25 Nov 2015 E22 Nuclear Meltdown Disaster 29 Jul 2015