I read in Al-Rai Alaaam that piss will solve the pollution problems from diesel, because piss contains Urea, and bla bla bla.

Although what they intend to say is true, the way it was explained, just makes me want to go "what are you talking about, do your own good research and write something constructive? why do we need to know each day that piss has some benefit! "

Anyways, back to some science, to meet Euro 4 and 5 emission limits in Europe for heavy duty vehicles, selective catalytic regeneration (SCR) is fitted on trucks. The main element that gives less emissions is the use of the Adblue solution, which is made of 32 % urea in water. This solution interacts with the emissions from the exhaust, and gives less harmful substance. I will not go into more details on this subject, because it would be only interesting for people dealing with the subject, but that is it in a nutshell.

As for the piss articles, the guys who look for them are sick, and should look for better things to do.