Sails and satellite navigation could cut shipping industry's emissions by up to a third

A cargo vessel with Flettner rotors – a modern equivalent to sails. Norsepower, Author provided

In the vast expanse of the world’s oceans, a transformation is underway.

The international shipping sector, made up of thousands of massive cargo ships laden with many of the goods we buy, emits carbon dioxide (CO₂) roughly equivalent to the entire country of Germany.