S6 E1: Black Tide

S6 E2: Long Walk Of Fred Young

S6 E3: A World Of Difference

S6 E4: Cashing In On The Ocean

S6 E5: Patterns From The Past

S6 E6: The Invisible Flame

S6 E7: The End Of The Rainbow

S6 E8: The Beersheva Experiment

S6 E9: Einstein

S6 E10: The Keys Of Paradise

S6 E11: A Plague on our Children

S6 E12: Life on a Silken Thread

S6 E13: Sweet Solutions

S6 E14: Race for the Gold

S6 E15: All Part of the Game

S6 E16: India: Machinery of Hope

S6 E17: The Bridge that Spanned the World

S6 E18: Termites to Telescopes

S6 E19: Blindness: Five Points of Views