S.S. Chern obituary

Chern was one of those mathematicians whose name I recognize as being considered one of the giants of 20th century mathematics, but only from hearing and seeing his name, not from actually knowing his work. Here's the NYTimes obit:

Shiing-Shen Chern, 93, Innovator in New Geometry, Dies
December 7, 2004
By KENNETH CHANG
Dr. Shiing-Shen Chern's abstract discoveries about the
twistings of geometric surfaces have found wide use in
physics and mathematics.
http://www.nytimes.com/2004/12/07/international/asia/07chern.html