Ep 7. Great Lakes

How the Earth Was Made season 1 episode 7, titled "Great Lakes," explores the formation of one of North America's most iconic natural landmarks: the Great Lakes. Stretching across more than 94,000 square miles and holding roughly 20% of the world's freshwater supply, the Great Lakes have long been a source of fascination and wonder for scientists and nature enthusiasts alike.

The episode begins by examining the geological forces that gave rise to the Great Lakes, including the slow and steady movements of glaciers and the shifting tectonic plates beneath the Earth's surface. Viewers are taken on a journey back in time, as the show explores how the geography and climate of North America has evolved over millions of years, eventually leading to the formation of the Great Lakes as we know them today.

Throughout the episode, viewers are treated to stunning visuals of the Great Lakes and the surrounding landscapes, from the towering cliffs of the Niagara Escarpment to the rolling hills of the Appalachian Mountains. The show also features interviews with experts in the fields of geology, geography, and environmental science, who offer insights into the complex processes that shape our planet and the ways in which we are impacting those processes.

As the episode unfolds, viewers discover how the Great Lakes were formed during the last ice age, when massive glaciers carved out the basins that would eventually be filled with water. The show explores the unique characteristics of each of the five Great Lakes, including their depths, temperatures, and the wildlife that calls them home.

In addition to its focus on the natural history of the region, the episode also examines the ways in which humans have impacted the Great Lakes over the years. From pollution to overfishing, the episode explores the challenges facing this vital ecosystem and the efforts being made to protect it for future generations.

As the episode draws to a close, viewers are left with a deep appreciation for the awe-inspiring beauty and geological significance of the Great Lakes, as well as a sense of responsibility to protect and preserve this precious resource. "Great Lakes" is a fascinating and informative episode of How the Earth Was Made, offering a compelling look at the geological forces that shape our planet and the ways in which we are interconnected with the natural world.