Professor George Leung passed away in December 2004. After his retirement from University of Massachusetts, he selected domain name "yellowearth.net" to be a secondary site in case his university account can no longer be used. After his passing away, that domain name and this site is managed by his family friend.
Here is an article written by Prof. Leung telling us how he became involved in the Yellow River problem.
Here is an on line memorial (in Chinese) for George Leung.
George's original Yellow River web site at Umass Dartmouth is no longer accessible. However, archive.org has dutifully recorded that wonderful web site multiple times. Here is a link.
If you would like to contribute to George's cause of making Yellow River flow clean again, we think the best way is to make a tax deductible contribution to a memorial fund in his name. Here is the mailing address:
George Leung Memorial Fund
c/o Physics Department
University of Massachusetts, Dartmouth
285 Old Westport Road
North Dartmouth, MA 02747
If you have questions or comments regarding this web site, please send an email to zhoulin88 at gmail dot com