NOVA Season 12 Episode 4 Synopsis

NOVA explores whether "yellow rain", described by members of the Hmong tribe of Laos, is a form of chemical warfare - or a naturally occurring phenomenon.

NOVA Season 12 Episodes...

• s12e01 - Space Bridge to Moscow
• s12e02 - The National Science Test I
• s12e03 - Fountains of Paradise
• s12e04 - The Mystery of Yellow Rain
• s12e05 - The Nomads of the Rain Forest
• s12e06 - Farmers of the Sea
• s12e07 - Frontiers of Plastic Surgery
• s12e08 - Space Women
• s12e09 - Jaws: The True Story
• s12e10 - Acid Rain: New Bad News
• s12e11 - Stephen Jay Gould: This View of Life
• s12e12 - The Garden of Inheritance
• s12e13 - Edgerton and His Incredible Seeing Machines
• s12e14 - Global Village
• s12e15 - Conquest of the Parasites
• s12e16 - In the Land of the Polar Bears
• s12e17 - AIDS: Chapter One
• s12e18 - The Shape of Things
• s12e19 - Baby Talk
• s12e20 - The Mathematical Mystery Tour
• s12e21 - Child's Play: Prodigies and Possibilities
• s12e22 - Monarch of the Mountains

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.