The sea is salty, the rivers feeding it are not, and the salt has been building up for hundreds of millions of years. This short course traces ocean salt from rained-on rock through rivers to the sea, explains why evaporation leaves salt behind in the ocean but rivers stay fresh, breaks down what's actually dissolved in seawater, and visits the saltiest and freshest waters on Earth.
The sea is salty, the rivers feeding it are not, and the salt has been building up for hundreds of millions of years. This short course traces ocean salt from rained-on rock through rivers to the sea, explains why evaporation leaves salt behind in the ocean but rivers stay fresh, breaks down what's actually dissolved in seawater, and visits the saltiest and freshest waters on Earth.
