![The Reaction Ferries of Basel: What Have We Missed?](https://hight3ch.com/wp-content/uploads/2017/10/the-reaction-ferries-of-basel-wh.jpg)
On the river Rhine in Switzerland, there are reaction ferries: boats with no engine, no paddles, no onboard motive power at all. Here’s how they work — and a question about what other simple ideas are out there.
On the river Rhine in Switzerland, there are reaction ferries: boats with no engine, no paddles, no onboard motive power at all. Here’s how they work — and a question about what other simple ideas are out there.