The Biggest Lava Flow on Earth (Might Be in Michigan)
18:44
The Meteorite That Buried Michigan | The Sudbury Impact
12:21
At This Spot, North America Almost Split in Two | The Midcontinent Rift
17:17
How They Made This Record-Breaking Bridge | Portage Lake Bridge, Michigan
1:22:28
Tsunami: o momento em que tudo mudou | Documental en portugués
25:17
A Gigantic and Mysterious Feature that Nobody has Heard of!
20:46
Modern Life Depends on This Extinct Rock | Banded Iron Formations
45:59
The Mysteries Of North America's Great Lakes | Naked Science | Spark
19:35