The Monitor's weekly news quiz for May 23- 27, 2011
Test your news knowledge – from the obvious to the obscure – with our photo quiz.
Question 2 of 10
2. The eruption of Iceland's Grímsvötn volcano is thought to be 1,000 times bigger than last year's volcanic eruption. Why hasn't it disrupted airplane flights this time?
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Planes can easily fly around the plume |
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It was found that volcanic ash has no effect on jet engines |
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Prevailing winds are blowing the ash away from air routes |
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There's less ash in the air |



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