TV NOVA - Season 33 Episode 1 : Mystery of the Megaflood NOVA - Season 33 Episode 1 : Mystery of the Megaflood 7.008/10 by 131 users It was the greatest flood of the past two million years, and it posed a giant scientific riddle. A maverick geologist became convinced that thousand-foot-deep floodwaters had scoured out vast areas of the American northwest near the end of the last ice age. Mainstream scientists scorned his theory while he searched patiently for answers to what could have triggered such an inconceivably violent event. Finally, an ingenious solution silenced the skeptics: traces of an enormous ice dam half a mile high, which had blocked a valley in present-day Montana and created an enormous lake behind it. With the help of stunningly realistic animation, NOVA takes viewers back to the Ice Age to reveal what happened when the dam broke, unleashing a titanic flood that swept herds of woolly mammoth and everything else into oblivion. Details Casts Posters Images Title NOVA - Season 33 Episode 1 : Mystery of the Megaflood Alternative Titles PBS新星Nova, نوا, نووآ, PBS Nova First Air Date 1974-03-03 Last Air Date 2025-09-24 Number of Episodes 1012 Number of Seasons 52 Genres Documentary, Networks PBS, Casts Plot Keywords , Episodes List NOVA Season 33 :Episode 1 Mystery of the Megaflood Mystery of the Megaflood 2005-09-20 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 2 Sinking the Supership Sinking the Supership 2005-10-04 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 3 Einstein's Big Idea Einstein's Big Idea 2005-10-11 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 4 Volcano Under the City Volcano Under the City 2005-11-01 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 5 Hitler's Sunken Secret Hitler's Sunken Secret 2005-11-08 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 6 Newton's Dark Secrets Newton's Dark Secrets 2005-11-15 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 7 Storm That Drowned a City Storm That Drowned a City 2005-11-22 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 8 The Mummy Who Would Be King The Mummy Who Would Be King 2006-01-03 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 9 Deadly Ascent Deadly Ascent 2006-01-17 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 10 The Perfect Corpse The Perfect Corpse 2006-02-07 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 11 Jewel of the Earth Jewel of the Earth 2006-02-14 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 12 The Ghost Particle The Ghost Particle 2006-02-21 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 13 Arctic Passage Arctic Passage 2006-02-28 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 14 The Great Robot Race: Nova The Great Robot Race: Nova 2006-03-28 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 15 Voyage to the Mystery Moon Voyage to the Mystery Moon 2006-04-04 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 16 Dimming the Sun Dimming the Sun 2006-04-18 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 17 Wings of Madness Wings of Madness 2006-11-07 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 18 Family That Walks on All Fours Family That Walks on All Fours 2006-11-14 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 19 ScienceNOW: Extinction ScienceNOW: Extinction 2006-10-03 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and... NOVA Season 33 :Episode 20 Underwater Dream Machine Underwater Dream Machine 2006-12-26 PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and...