Volcanoes • 2013 • episode "S1E4" • Secrets of the Earth

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

11:28

The Greenland ice sheet, the last remnant of the Ice Age, is melting at an unprecedented rate. Today, scientists and researchers from all over the world are paying close attention to what could become a global catastrophe.

Breakthrough • 2019 • Environment

93:17

We are living in exceptional times. Scientists tell us that we have 10 years to change the way we live, avert the depletion of natural resources and the catastrophic evolution of the Earth's climate.

2009 • Environment

53:32

As global temperatures rise, scientists are exploring solutions from planting trees to sucking carbon out of the air to geoengineering. But would they work? And what are the risks of engineering Earth's climate?

NOVA PBS • 2020 • Environment

57:59

Hugh Fearnley-Whittingstall and Anita Rani explore where this gigantic problem is coming from, and what we can all do to try and solve it. Hugh goes on the trail of the plastic that does get recycled Malaysia has become one of the biggest importers of British waste plastics. He travels to Malaysia to try and find out what is happening to it all, and what he sees shocks him to the core. Great piles of unsorted British plastics have been left to rot on illegal dumpsites with much of it sat near split UK council recycling bags.

S1E2 • War on Plastic with Hugh and Anita • 2019 • Environment

32:38

At Göbekli Tepe, the oldest known megalith in the world, Graham questions if simple hunter-gatherers alone could have built such an advanced structure.

S1E5 • Ancient Apocalypse • 2022 • Environment