Diesel engines are different from gas engines in numerous ways, including their use of high compression ratios. Here's why that is and what it means.

Michael Leamy receives funding from the National Science Foundation, the Department of Energy, General Motors, and other government agencies and corporations. Gasoline fuels most light-duty vehicles, ...

You don't see diesels on the road as much ever since Volkswagen's emissions cheating scandal broke, but they're still out there, and the people who love them still love them. That's partly because ...