A series of strange symptoms of poisoning appeared on a girl Zhu Lin unexpectedly: hair lost, muscles on the face paralyzed, limbs weakened, and words slurred. No one can tell what is the cause. Life is in danger! One of her classmates emailed for help on Internet. Fortunately, the first reply arrived in less than three hours. Afterwards, over 1,500 emails reached her. Most of the replies analysed that Zhu Lin had been thallium poisoned. It is the Internet that has saved her young life! In 1994, there were merely a few universities and institutions on Internet. Now there are over 620 thousand end us