The Great Lakes region provided geologists with much of the evidence for the frequent ice ages that visited North America. But the lakes may be a rather transient feature of the continent dependent upon the recurring ice ages to maintain their existence.
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The discovery of the San Andreas Fault and efforts to understand it are described.
2009 • Environment
The discovery of the Marianas trench was one of the first puzzle pieces that lead to the understanding of the most massive process that shapes the geology of the Earth; plate tectonics and the creation of new crust in the mid-ocean ridges and its subduction under the continents.
2009 • Environment
The unique geological conditions that make Krakatoa and its successor, Anak Krakatau, extraordinarily explosive and, despite its remoteness, dangerous are explained.
2009 • Environment
Scotland is a ground zero for some of the most significant geologic cataclysms in Earth's history. Understanding of these titanic shifts was prompted by a mysterious lake known as Loch Ness.
2009 • Environment
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.
2009 • Environment
Chile's Atacama Desert is the driest, oldest and deadest desert on earth. Yet it's plays host to living creatures and penguins even thrive nearby. It may provide clues to where to look for life on other, seemingly barren, planets.
2009 • Environment
The Great Lakes region provided geologists with much of the evidence for the frequent ice ages that visited North America. But the lakes may be a rather transient feature of the continent dependent upon the recurring ice ages to maintain their existence.
2009 • Environment
The evidence, structure, history and potential threat of the Yellowstone super volcano are described.
2009 • Environment
A tsunami is a dramatic indicator of geological activity magnifying the impact into extensive coastal destruction. Scientists searching for evidence of past tsunamis to predict when they are likely to recur and how severe they are likely to be uncover a new phenomenon, the mega-tsunami.
2009 • Environment
The Hawaiian Islands are a study in contradictions. The fastest growing islands on earth are also the fastest disappearing. Made of one of the hardest minerals, it crumbles at a touch. The world's most active volcano is nowhere near the typical volcanic regions. Geologists strive to understand these mysteries.
2009 • Environment
The Alps are known as the majestic mountain range of Europe. But their formation from a collision between Europe and Africa left an unstable structure that is now a classic study in erosion by rivers of water, ice and rock suggesting an even greater former glory. Left unexplained is why the Mediterranean Sea exists between the continents.
2009 • Environment
The real impact of global warming is now being felt in communities around the world. Climate scientists explain what to expect where you live, and what steps might still be taken to reverse the climate crisis.
Breakthrough • 2019 • Environment
The evidence, structure, history and potential threat of the Yellowstone super volcano are described.
S1E8 • How the Earth Was Made • 2009 • Environment
A look at sharks and whales that go to great lengths to survive in the South Pacific.
S1E3 • South Pacific • Environment
This is a story about the greatest risks to humanity, and what we can do about it. We are living in a time when human-made risks pose the biggest threat to our existence. Technological progress has brought us to a precipice. For the first time ever, we have the capacity to destroy ourselves. Edge of Existence lays out how we can pull ourselves back from this precipice in order achieve a vast and extraordinary future.
2022 • Environment
Iain Stewart investigates a new and controversial energy rush for the natural gas found deep underground. Sometimes, this is right under the places people live in. Getting it out of the ground involves hydraulic fracturing - or fracking. Iain travels to America to find to find out what it is, why it is a potential game changer and what we can learn from the US experience. He meets some of the people who have become rich from fracking as well as the communities worried about the risks.
How the cruise of a lifetime turned into a deadly nightmare. Passengers and day trippers were trapped when New Zealand’s most active volcano erupted. Were tourists warned of the danger and could more have been done to prevent tragedy?
Four Corners • 2020 • Environment