Congo: Protecting the Gorilla Forests • 2019 • episode "S1E1" • Paradise Preserved

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

156:08

The film reveals how water underpins every aspect of our existence. In the emptiness of outer space, Earth is alive because of water. Humanity's relationship with this simple molecule is everything and has been both positive and negative. Explore our interdependent relationship with water and the cosmos. Chapter 1: Pulse How did water become the essential force behind all life? Dive in! Chapter 2: Civilizations Travel into the past to see how water created the earliest civilizations. Chapter 3: Crisis How is Earth's changing water cycle – and water for profit - forcing changes across the globe?

2021 • Environment

44:54

The geological history of New York City is as superlative as it's current economic impact including; a titanic mountain rage, massive volcanic eruptions, immense glaciers and an enormous flash flood.

S1E5 • How the Earth Was Made • 2009 • Environment

44:24

The unique geological conditions that make Krakatoa and its successor, Anak Krakatau, extraordinarily explosive and, despite its remoteness, dangerous are explained.

S1E3 • How the Earth Was Made • 2009 • Environment

49:05

We are all seeing rather less of the Sun. Scientists looking at five decades of sunlight measurements have reached the disturbing conclusion that the amount of solar energy reaching the Earth's surface has been gradually falling. Paradoxically, the decline in sunlight may mean that global warming is a far greater threat to society than previously thought.

Environment

53:14

Since 1976, the Dead Sea's level has dropped more than 100 feet, leaving its coastline pockmarked with thousands of sinkholes. NOVA follows the unprecedented endeavor to connect the Red Sea to the Dead Sea by way of a massive desalination plant - perhaps the world's largest water chemistry experiment - as scientists race to save the Dead Sea and bring water to one of the driest regions on Earth.

NOVA PBS • 2019 • Environment