Season 43
Drill underground to see the treasures that power our world—today and into the future.
Treasures of the Earth: Power
Treasures of the Earth: Metals
What is it about the nature of metals that have made them a pillar of human civilization?
Treasures of the Earth: Metals
What processes in the depths of the Earth forge beautiful and precious stones?
Treasures of the Earth: Gems
From 9/11 to today’s crowd-sourced violence, trace how terrorists’ strategies have evolved
15 Years of Terror
Discover how Allied forces conspired to destroy one of Hitler’s most diabolical weapons.
Bombing Hitler's Supergun
Join engineers as they race to rescue a historic lighthouse from certain doom.
Operation Lighthouse Rescue
Follow our ancient ancestors’ footsteps out of Africa and into every corner of our planet.
Great Human Odyssey
Deep in the ocean, animals that flash, sparkle, and glow use light to survive in the dark.
Creatures of Light
Join investigators as they untangle the cause of Alzheimer’s and race to develop a cure.
Can Alzheimer's Be Stopped?
What’s behind the death of a tiny creature with an outsized role in the Antarctic?
Mystery Beneath the Ice
In WW1 Allied troops tunneled under enemy lines to create the biggest explosion ever seen.