An international symposium on Frontiers of Sciences opened yesterday in Beijing's Tsinghua University to celebrate the 80th birthday of Professor Chen Ning Yang, a Nobel prize winner and also Tsinghua's honorary professor.

New discoveries and the latest contributions in the field of physics and biotechnology are the main topics in the symposium.

More than 150 scholars and scientists from China and abroad are attending the three-day event, including 14 Nobel prize winners.

(China Daily, Page: 3, Date: 06/18/2002)