Rock Identification with Willsey: Conglomerate, Breccia, and Diamictite
27:59
Rock Identification with Willsey: Sandstone, Mudstone, and Shale
31:36
Rock Identification with Willsey: Volcanic Rocks (Tuff, Obsidian, Pumice)
32:16
Stephen Axford: How fungi changed my view of the world
11:16
Finding Gold In Oxidized Conglomerate Rocks!
39:10
Explore Numerous Layers of Petrified Trees: Yellowstone National Park
24:49
Minerals with Willsey: Quartz
27:15
O Conceito Mais Mal Compreendido da Física
45:53