Your gasaholic friends may not believe you, but feel free to tell them that diesels will soon be cleaner than current gasoline engines. It's not a trick-they'll have to be that clean if manufacturers ...

You don't often see the words "clean" and "diesel" put together like that, but get ready for some big changes to the diesel landscape. Starting in October 2006, gas stations and truck stops will sell ...

In a demonstration of its clean diesel-power engines, Caterpillar recently asked President Bush - who visited the company when they debuted cleaner engines - to hold a white handkerchief over the ...