TRANSPORTATION

A plug-in hybrid is a car that combines the internal combustion engine and a battery-powered, electric motor. When the electric motor runs out of "fuel," it is recharged via a "clean energy grid,...

Carpooling makes a lot of sense. Putting more people in fewer cars saves a great deal of time and gasoline. Carpooling is especially helpful if you have children who attend different schools. Here are some spec...

Biodiesel is considered a "green" fuel. It is made from plant-based oils such as sunflower, flax, and soybean oils or the ubiquitous "vegetable oil". But you can't just pour vegetable ...