Instructional Video8:20
Curated Video

Why The United States Is SO MUCH LARGER Today Than It Was In 2023

9th - Higher Ed
As of January 2024, the United States grew by about 400,000 square miles of territory or larger than the state of Texas. This was done under a little known United Nations policy called the Extended Continental Shelf. So why has the...
Instructional Video9:10
Professor Dave Explains

Topography and Types of Sediments

9th - Higher Ed
Now that we've learned about the layers of the ocean, let's focus on the floor. How did oceanographers learn about the composition of the ocean floor? What is sediment? How do different types of sediment get to the ocean and what...