Glaciers: Earth's Frozen Rivers

The video discusses glaciers, their formation, and distribution, highlighting that 1/10th of Earth's land is covered by glacial ice, with 70% of fresh water in ice form. Most ice is in Antarctica, while Greenland holds the Northern Hemisphere's largest deposits. These glaciers can be over 4000 meters thick, affecting Earth's crust. Ice layers reveal historical climate data, up to 800,000 years old. The French Alps' glaciers, though thinner, are studied for climate change insights. The Glacier Research Laboratory in Grenoble monitors five glaciers, noting their retreat over three decades. Researchers analyze trapped air bubbles in ice to understand atmospheric changes, using oxygen isotopes to infer past temperatures. Despite consensus on glacier retreat, exaggerated claims about Himalayan glaciers have caused confusion.

How thick can the ice in large polar glaciers reach?

What has been the trend of glaciers in the French Alps over the past three decades?