with 8 episodes premiered on November 27, 2008

with 25 episodes premiered on November 6, 1960

with 24 episodes premiered on January 4, 1962

with 24 episodes premiered on January 6, 1963

with 11 episodes premiered on May 5, 1964

with 11 episodes premiered on January 3, 1965

with 17 episodes premiered on October 3, 1965

with 17 episodes premiered on June 20, 1966

with 4 episodes premiered on May 11, 1967

with 14 episodes premiered on September 26, 1968

with 28 episodes premiered on September 24, 1969

with 15 episodes premiered on November 2, 1970

with 10 episodes premiered on October 4, 1971

with 10 episodes premiered on November 6, 1972

with 10 episodes premiered on November 26, 1973

with 8 episodes premiered on October 9, 1974

with 8 episodes premiered on October 22, 1975

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 0 episodes premiered on Invalid Date

with 5 episodes premiered on October 8, 1998

with 15 episodes premiered on October 4, 1999

with 19 episodes premiered on October 5, 2000

with 17 episodes premiered on October 2, 2001

with 1 episodes premiered on October 17, 2002

with 1 episodes premiered on October 22, 2003

with 23 episodes premiered on September 16, 2004

with 29 episodes premiered on August 31, 2005

with 24 episodes premiered on October 11, 2007

with 17 episodes premiered on October 16, 2008

with 18 episodes premiered on October 11, 2009

with 18 episodes premiered on September 23, 2010

with 18 episodes premiered on October 13, 2011

with 15 episodes premiered on October 18, 2012

with 19 episodes premiered on October 3, 2013

with 6 episodes premiered on October 9, 2014

with 2 episodes premiered on October 15, 2015

with 2 episodes premiered on October 6, 2016

with 6 episodes premiered on September 24, 2017

with 11 episodes premiered on September 23, 2018

with 17 episodes premiered on September 20, 2019

with 14 episodes premiered on November 6, 2020

with 14 episodes premiered on November 5, 2021

with 13 episodes premiered on January 6, 2023

with 14 episodes premiered on January 4, 2024

New hosts Sarika Cullis-Suzuki and Anthony Morgan take on The Nature of Things, the world's longest-running science documentary series.

with 14 episodes premiered on January 2, 2025

New hosts Sarika Cullis-Suzuki and Anthony Morgan take on The Nature of Things, the world's longest-running science documentary series.

with 4 episodes premiered on October 28, 2025