The Biggest Lava Flow on Earth (Might Be in Michigan)
27:12
How Do Archaeologists Figure Out What Ruins Were? | The Cliff Mine Archaeology Project
18:44
The Meteorite That Buried Michigan | The Sudbury Impact
45:59
The Mysteries Of North America's Great Lakes | Naked Science | Spark
17:17
How They Made This Record-Breaking Bridge | Portage Lake Bridge, Michigan
22:57
Are These Creatures in Your Spring Puddles? | Vernal Pools
20:46
Modern Life Depends on This Extinct Rock | Banded Iron Formations
39:10
Explore Numerous Layers of Petrified Trees: Yellowstone National Park
25:17