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SciShow
Mars's Surface Is Messed Up | The Martian Dichotomy
Most rocky planets have pretty consistent surface features, with a fairly even mix of mountains and basins in each hemisphere. This is NOT the case on Mars! What do scientists know about this mystery?
SciShow
The Siberian Traps: A 250 Million Year Old Crime Scene
The event that killed the dinosaurs 66 million years ago might be the most famous mass extinction ever, but it's not the only one in Earth’s history, nor is it the worst... not by a long shot.
Professor Dave Explains
Volcanoes: Formation, Types, and Activity
It's time to talk about everyone's favorite geological feature, volcanoes! What are these things? Why do they erupt? What are the different types of volcanoes? How do they form? What happens to their lava? Let's learn about all of these...
Professor Dave Explains
The Wilson Cycle and Plate Boundaries
We just learned about plate tectonics, so let's see how that fits into a global-scale model for the formation and destruction of supercontinents called the Wilson Cycle. How do supercontinents like Pangea form and split up? It's an...
Physics Girl
Why Hawaii's volcano is so UNUSUAL
Hawaii is known for its volcanoes, but most volcanoes on earth exist along tectonic plate lines. Hawaii does not! What causes Hawaii to form, and how is it related to the mystery of a magnetic bar code across the Pacific Ocean? Host...