What If: Science, Theory, and Possibilities episodes
What If All Glaciers Melted Instantly? Sea Level Rise and Global Consequences

What If All Glaciers Melted Instantly? Sea Level Rise and Global Consequences

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What would happen if every glacier on Earth melted instantly? Explore a hypothetical world of rising seas, flooded cities, disrupted rivers, and cascading climate disasters.

Compare three scenarios: the sudden loss of alpine glaciers, the melting of Greenland and Antarctica's vast ice sheets, and the disappearance of floating sea ice. Discover how ice loss could reshape coastlines, alter gravity's influence on ocean levels, and accelerate global warming through the albedo effect.

From a potential 65-meter (215-foot) sea level rise to the physics of hypothetical tsunamis, this episode examines which places might survive, what civilization could face, and whether glaciers could ever return.


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#glacier, #ice cap, #global warming, #climate change, #climate, #Earth, #ocean, #water, #sea, #sea level, #sea level rise, #glacier melting, #alpine glaciers, #ice sheets, #Greenland, #Antarctica, #sea ice, #cryosphere, #coastal flooding, #tsunami physics, #freshwater, #albedo effect, #climate feedback loops, #hysteresis, #65-meter sea level rise


Timeline

00:00:What If All Glaciers Melted Instantly?

00:42:Mountain Glaciers vs. Ice Sheets

01:25:Scenario 1: All Alpine Glaciers Melt Instantly

02:03:Drying Up the World's Major Rivers

03:47:The Impact on Coastal Sea Levels

05:25:Scenario 2: Greenland and Antarctica's Ice Sheets

07:42:99% of Freshwater Ice and Gravity Shifts

08:24:The 65-Meter (215-Foot) Sea Level Rise

09:16:Deep-Ocean Tsunami Physics

10:14:North Pole Tsunami: Impacts and Inundation

11:21:South Pole Tsunami: The Antarctic Beast

12:12:Waves Collide: Wiping Out Cities and Countries

13:14:The New Inland Map and Secondary Disasters

15:25:Scenario 3: Melting Sea Ice and the Cryosphere

16:36:Why Melting Sea Ice Doesn't Raise Water Levels: Displacement

17:08:The Albedo Effect and Accelerated Global Warming

18:31:Climate Feedback Loops and Civilization Collapse

19:40:Can Glaciers Ever Return? Hysteresis Explained

20:42:The New Waterworld Era