Geography
How Karst Landscapes Form from Carbonate Dissolution
Quick fact
Karst landscapes cover roughly 10–15% of Earth's land surface, and about 25% of the world's population may depend on water that flows through karst aquifers.
Why this is interesting
The same rock that builds majestic cliffs can be silently eaten away by ordinary rainwater, creating entire underground worlds. How can something as soft as rain carve stone into labyrinths of caves and pits?