Last month, Mr. Johnson proposed new rules governing fine particulate matter, known as soot.
The product is nutrient-rich organic matter, known as biosolids, that is used as fertilizer.
All other cities must reduce the levels of larger particulate matter, known as PM 10, by 10 percent.
Saprotroph, also called saprophyte, saprobe, or detritivore, organism that feeds on nonliving organic matter known as detritus.
It only looked at health impacts on adults and the effect of dangerous fine-particulate matter, known as PM 2.5.
A widely popular theory known as supersymmetry posits the existence of a whole new category of matter, known as superparticles.
That spring, attending lectures in the foundations of mathematics, he was introduced to a deep and unresolved matter known as the "decision problem".
The journalist Frank I. Cobb called Wilson's control of Congress "the most impressive triumph of mind over matter known to American politics".
Using satellite data the boffins worked out, for the first time, what global exposures were to fine particulate matter (known as PM2.5) from 2000 to 2012.
In the case of atoms with zero or integral intrinsic spin (atoms called bosons), the cooling creates a state of matter known as a Bose-Einstein condensate (BEC).
Compress it enough at the right temperature, though, and it will also turn into an unusual state of matter known as a supercritical fluid.
