A sweeter smelling diesel

The Star-Ledger, Newark, N.J.: The U.S. Environmental Protection Agency has gradually been cracking down on diesel engine emissions, one of the nation's most serious causes of air pollution.
The EPA is proposing new standards that will cut diesel pollution from trains and ships by as much as 90 percent over the coming decades. Environmental groups calculate the benefit will be equivalent to taking 750,000 diesel trucks off the roads.
This is excellent news for everyone, especially commuters and those who live near train lines and ports. The only question is whether the EPA could have demanded a quicker timetable for phasing in its new limits.