For the first time the W.H.O.raised its alert level from phase four to phase five on April twenty-ninth.
VOA: special.2009.05.06
The researchers said those with the highest level of cortisol were five times more likely to die from cardiovascular causes than those with the lowest levels.
VOA: special.2010.10.12
In five of them, the rate at which fish are being taken out of the sea has dropped to a level that should let the populations recover.
VOA: special.2009.09.08
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