28:48

Hydrothermal Explosion at Yellowstone's Biscuit Basin: The Geology Behind the Headlines

04:23

Exploring Natural Bridge Cavern (Music: Pachelbel's Canon in D Major)

53:02

Freshwater Geoscience 1 (Core Concepts and the Origin of Water)

02:18

A Goat with a Bucket on its Head

10:56

A Geologist Explains Why Soil Cracks Form Each Summer

52:08

Environmental Science 4 (Evolution, Biodiversity, and Extinction)

18:29

Conflict in Ukraine's Donbas Region: The Geology Behind the Headlines

01:48:07

Geology 7 (Volcanoes)

30:28

Hunga Ha'apai (Tonga) Eruption and Tsunami: The Geology Behind the Headlines

01:10:04

Geology 17 (Landslides and Mass Wasting)

01:32:48

Geology 16 (Mountains)

01:11:32

Geology 15 (Faults, Folds, and Joints)

35:23

Geology 3 (An Overview of Atoms and Chemical Bonds)

08:18

Geology of Mount San Jacinto near Idyllwild, CA

03:36

Geology of the Smith River and Tolowa Sand Dunes near Crescent City, California

04:43

Geology of the Smith River, California

02:52

Geology of Sunset Crater, Arizona

21:41

Environmental Science 13 (Biotechnology and Genetic Modification of Food)

50:09

Invasion of the Ecosystem Snatchers: Invasive Species

07:00

The 12 Most Valuable Gems on Earth (Music: Beethoven's 5th symphony)

25:53

Environmental Science 12 (Organic Food and Agriculture)

01:00:47

Environmental Science 11 (Modern Agriculture and the Food Supply)

48:21

Environmental Science 10 (Soil Degradation and Conservation)

48:23

Environmental Science 9 (Soil Structure and Plant Growth)

53:21

Environmental Science 3 (Planet Earth)

01:04:21

Environmental Science 2 (Matter and Energy in the Environment)

45:50

Environmental Science 1 (Introduction)

46:33

Oceanography 4 (Marine Sediments)

50:53

Oceanography 3 (Marine Provinces)

01:06:04

Geology and Seismic Potential of the Hustain Fault, Mongolia

17:26

Geology Lab 1 (Growing Crystals at Home)

01:58

Geology 28 (Farewell)

52:16

Geology 23 (Geologic Time)

57:07

Geology 20 (Glaciers and Ice Sheets)

46:01

Geology 21 (Deserts)

44:12

Geology 19 (Groundwater)

56:07

Geology 1 (Geoscience and the Origins of the Earth)

43:05

Geology 18 (Rivers and Springs)

38:33

Geology 14 (The Ocean Floor)

50:59

Geology 12 (Earthquakes and Earth's Interior)

49:34

Geology 11 (Metamorphic Rocks)

45:09

Geology 10 (Sedimentary Rocks)

29:53

Geology 9 (Soil)

29:20

Geology 8 (Weathering and Erosion)

41:53

Geology 6 (Origins of Lava and Magma)

37:35

Geology 5 (Igneous Rocks)

56:25

Geology 4 (Minerals)

53:35

Geology 2 (Plate Tectonics)

40:28

Geology 1 (The Science of Geology)