How scared should we be of polonium?

 作者:王孙建     |      日期:2019-03-02 07:20:00
By Andy Coghlan, Anil Ananthaswamy and Jim Schnabel THE death of former Russian spy Alexander Litvinenko from polonium poisoning has left a trail of radioactivity stretching from London to Moscow. Traces of the element have been found at 10 UK addresses, some aircraft that flew between the two cities have been grounded, while an Italian who dined with Litvinenko is being treated for radiation poisoning. Nearly 3000 people have called NHS direct, the UK’s health service helpline,