On a summer's night, there's nothing more magic than watching the soft glow of fireflies switching on and off. Few other life forms on land can light up the night, but in the dark depths of the oceans, it's a different story: nearly 90% of all species shine from within. Whether it's to scare off predators, fish for prey, or lure a mate, the language of light is everywhere in the ocean depths, and scientists are finally starting to decode it. NOVA and National Geographic take a dazzling dive to this hidden undersea world where most creatures flash, sparkle, shimmer, or simply glow. Join deep sea scientists who investigate these stunning displays and discover surprising ways to harness nature's light-from tracking cancer cells to detecting pollution, lighting up cities, and even illuminating the inner workings of our brains.

NOVA Season 43 Episodes...

• s43e01 - Dawn of Humanity
• s43e02 - Arctic Ghost Ship
• s43e03 - Secrets of Noah's Ark
• s43e04 - Cyberwar Threat
• s43e05 - Animal Mummies
• s43e06 - Making North America: Origins
• s43e07 - Making North America: Life
• s43e08 - Making North America: Human
• s43e09 - Inside Einstein's Mind
• s43e10 - Secret Tunnel Warfare
• s43e11 - Life's Rocky Start
• s43e12 - Mystery Beneath the Ice
• s43e13 - Himalayan Megaquake
• s43e14 - Creatures of Light
• s43e15 - Memory Hackers
• s43e16 - Iceman Reborn
• s43e17 - Rise of the Robots
• s43e18 - Vikings Unearthed
• s43e19 - Can Alzheimer's Be Stopped?
• s43e20 - Wild Ways
• s43e21 - Operation Lighthouse Rescue
• s43e22 - Bombing Hitler's Supergun

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.