We knew our engine hacks theme would come down to an argument over the difference between “a motor” and “an engine” so after much deliberation, name calling, restraining orders, and a duel we’re happy ...

First came the sit-on-top kayak. Then the pedal-powered kayak. Now, anglers are clamoring for motorized kayaks to take them farther and faster. Adding a motor does more than save human-powered energy, ...