quasars winds -- is churning out the newly made substance

Astronomers Find Dust in the Wind of Black Holes: Press Release
Supernovae might have been more important for creating dust in some environments, while quasars were more important in others,"
http://www.spitzer.caltech.edu/Media/releases/ssc2007-16/release.shtml

"Some scientists believe that much dust was in fact created by an early generation of short-lived stars that went supernova, instead."
Stars, Humans May Owe Origin To Black Hole Dust on Wired Science
http://blog.wired.com/wiredscience/2007/10/stars-humans-ma.html