In the first of a three-part series, noted anthropologist Donald Johanson probes the earliest ancestors of the human species - reaching back more than three million years to a strange ape who walked upright. Johanson takes viewers to the site in Ethiopia where he discovered the fossil remains of this missing link nicknamed "Lucy".

NOVA Season 21 Episodes...

• s21e01 - The NOVA Quiz
• s21e02 - Wanted: Butch and Sundance
• s21e03 - Secrets of the Psychics
• s21e04 - Dying to Breathe
• s21e05 - Shadow of the Condor
• s21e06 - The Real Jurassic Park
• s21e07 - Roller Coaster!
• s21e08 - Mysterious Crash of Flight 201
• s21e09 - Great Moments from NOVA
• s21e10 - The Best Mind Since Einstein
• s21e11 - Stranger in the Mirror
• s21e12 - Codebreakers
• s21e13 - Dinosaurs of the Gobi
• s21e14 - Daredevils of the Sky
• s21e15 - Journey to Kilimanjaro
• s21e16 - Can Chimps Talk?
• s21e17 - In Search of Human Origins, Part One
• s21e18 - In Search of Human Origins, Part Two
• s21e19 - In Search of Human Origins, Part Three
• s21e20 - Can China Kick the Habit?
• s21e21 - Aircraft Carrier!

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.