It's no secret that over the past few years, we've seen a remarkable improvement in how machines are powered. After all, with climate concerns on the rise, many countries are trying to explore ...

IOWA CITY, Iowa (AP) -- Used vegetable oil, methanol and soda lye are a winning recipe for saving money on fuel for Damon Toal-Rossi. The Iowa City man uses a mixture of the items to make biodiesel ...

There was a time when spotting a diesel-powered vehicle was easy. There would be a choking cloud of smoke, followed by lots of clanking and a really bad smell. Don’t tell that to Tim Tuinstra. The ...