Diesel engines, for all their rugged usefulness, can be tremendously polluting. They produce more NOx — nitrogen oxides-based emissions – than gasoline-fed cars, as well as more particulates, aka soot ...

In the American automotive industry, the Ford-Navistar breakup, which led to the two companies parting ways in 2009, is a notable example of a great partnership turned sour. What had started as a ...