- Lesson 1
Rain Shadows: why mountains steal the rain
Spin a live 3D cross-section of the Sierra Nevada and the Appalachians. Watch air rise, cool, rain itself out, then sink warm and dry, and see why the West gets deserts and the East mostly does not.
Start the lesson → - Lesson 2Coming soon
What is a geoid, anyway?
Earth is not a sphere, and it is not even a smooth egg. Why "sea level" is a lumpy surface shaped by gravity, and why your GPS height and your map height disagree.
- Lesson 3Coming soon
Every map lies: projections
You cannot flatten an orange peel without tearing it. Drag Greenland around a live map and watch it shrink to its real size.
- Lesson 4Coming soon
Why the great deserts line up
The Sahara, the Arabian, the Sonoran and the Australian Outback all sit near 30 degrees from the equator. That is not a coincidence.
- Lesson 5Coming soon
Why cities sit where they sit
Rivers, fall lines, harbors and mountain passes. The geography that decided where Washington, Los Angeles and Montevideo grew up.
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