Geology 101 with Willsey, Episode#16: Metamorphic Rocks
24:29
Geology 101 with Willsey, Episode #17: Relative Dating Principles
18:31
Rock Identification with Willsey: Intro to Metamorphic Rocks!
29:28
An ordinary looking Nevada mountainside reveals extraordinary geology and beauty.
14:18
Identifying Metamorphic Rocks -- Earth Rocks!
32:19
Geology 101 with Willsey, Episode #1: Intro to Earth
16:04
Why your tomatoes are tasteless: Mechanical Harvesting
24:25
Rock Identification with Willsey: BASALT and its many varieties
25:17