At 120 to a dollar, the yen is neither very strong nor weak - 110 or 100 would be considered strong.

CNN: MONEY & INVESTING

The illness can be more serious in people with weak immune systems such as the elderly or very young.

BBC: Schools still shut over water bug

Because they rely on signals from satellites transmitting from an altitude of around 20, 000 kilometres (12, 400 miles), the signals are very weak, making them vulnerable to accidental or deliberate interference.

ECONOMIST: GPS jamming

In my own childhood I learned a hard lesson at a very early age - you can't allow powerful people to bully the weak or to abuse their own power.

BBC: News | UK Politics | Ron Davies's speech in full