32:31 Earth Science: Lecture 2 - Atoms and Chemical Bonds Spahn's Science Lectures 35.8K views - 7 years ago
57:26 General Astronomy: Lecture 1 - Introduction Spahn's Science Lectures 132.5K views - 8 years ago
31:13 Earth Science: Lecture 18 - Atmospheric Moisture Spahn's Science Lectures 5.3K views - 6 years ago
29:33 General Astronomy: Lecture 15 - Earth's Atmospheric Structure and Magnetic Field Spahn's Science Lectures 3.7K views - 8 years ago
29:48 Earth Science: Lecture 24 - Climate Change (Part 2) Spahn's Science Lectures 1.8K views - 6 years ago
45:21 Earth Science: Lecture 6 - Metamorphic Rocks and Resources from Rocks Spahn's Science Lectures 10.8K views - 7 years ago
27:51 Earth Science: Lecture 5 - Sedimentary Rocks Spahn's Science Lectures 12.7K views - 7 years ago
38:33 Earth Science: Lecture 32 - The Terrestrial Planets Spahn's Science Lectures 2.3K views - 6 years ago
31:53 Earth Science: Lecture 1 - Introduction to Earth Science Spahn's Science Lectures 246K views - 7 years ago
38:36 Earth Science: Lecture 24 - Climate Change (Part 3) Spahn's Science Lectures 1.6K views - 6 years ago
27:20 General Astronomy: Lecture 18 - The Nature of Light Spahn's Science Lectures 4.4K views - 8 years ago
25:42 General Astronomy: Lecture 9 - The Origin of the Solar System Spahn's Science Lectures 7.4K views - 8 years ago
27:52 College Physics 2: Lecture 2 - Charge, Charging, and Atoms Spahn's Science Lectures 16.5K views - 4 years ago
33:58 Earth Science: Lecture 4 - The Rock Cycle and Igneous Rocks Spahn's Science Lectures 23.1K views - 7 years ago
30:36 General Astronomy: Lecture 16 - Atmospheres of the Terrestrial Planets Spahn's Science Lectures 3.2K views - 8 years ago
30:52 General Astronomy: Lecture 25 - The Evolution of a Protostar Spahn's Science Lectures 4K views - 8 years ago