Terra - Human Species and its Relationships • 2019

52:51

Their beauty has captivated us for millennia. Their cost can be extraordinary–some are even considered priceless. Precious gems like diamonds, rubies, emeralds, opal, and jade are the ultimate treasures of the earth, and each one is made from a specific–and often torturous–recipe of chemistry, pressure, and heat. The secrets to their sparkle, color, and even strength lie deep inside the gems themselves, but could they also hold clues to one of the most enduring mysteries in the field of geology? From Tiffany’s workshop in New York to the sapphire mines of Sri Lanka, from North Carolina’s emerald fields to the jade-laden Forbidden City of China.

Part 1 • Treasures of the Earth • 2016 • Environment

53:16

All over the world, scientists are discovering traces of ancient floods on a scale that dwarfs even the most severe flood disasters of recent times. What triggered these cataclysmic floods, and could they strike again? In the Channeled Scablands of Washington State, the level prairie gives way to bizarre, gargantuan rock formations: house-sized boulders seemingly dropped from the sky, a cliff carved by a waterfall twice the height of Niagara, and potholes large enough to swallow cars. Like forensic detectives at a crime scene, geologists study these strange features and reconstruct catastrophic Ice Age floods more powerful than all the world’s top ten rivers combined. NOVA follows their efforts to uncover the geologic fingerprints of other colossal megafloods in Iceland and, improbably, on the seabed of the English Channel. There, another deluge smashed through a land bridge connecting Britain and France hundreds of thousands of years ago and turned Britain into an island for the first time. These great disasters ripped through terrain and transformed continents in a matter of hours—and similar forces reawakened by climate change are posing an active threat to mountain communities throughout the world today.

NOVA PBS • 2017 • Environment

58:40

A gallop across the Steppe with extraordinary 'born in the saddle' Mongolian horsemen.

S1E6 • Human Planet • Environment

58:43

Documentary about how humans exploit the sea's riches with great ingenuity and bravery.

S1E1 • Human Planet • Environment

21:16

Scientists are just now unlocking the amazing secrets of how rain is made; some raindrops form around micrometeorites from outer space, others are created by bacteria that float into the upper atmosphere.

S1E1 • Secrets of the Earth • 2013 • Environment

50:00

Countless animals from across the globe currently face extinction; if we are to stem the tide we must understand the lifestyles and habitats of the awe-inspiring creatures currently in danger.

2020 • Environment