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But social security carries a risk: the risk that some will abuse the system, taking without giving. It's a risk we seem increasingly unwilling to accept. Attitudes are changing. Yet coming down hard on the unemployed also carries a risk. The risk th
BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min
PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat
Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为,我是说,耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现
Exercise and healthful eating are linked to better healthand so is having a decent circle of friends. Now it looks like that link between friends and better health is true for the major online social network, too: Facebook. Researchers compared the h
紧张的社会关系增加过早死亡的风险 LONDON, May 9 (Xinhua) -- Stressful social relations, shown as frequent arguments and conflicts with others or constant worries about families, could increase early death risk for middle-aged people, a