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Why has the US Issued a Global Travel Alert?
US travel alert; GM mosquitoes; Iranian migrants sew their lips together in protest
The US has issued a worldwide travel alert for its citizens in response to "increased terrorist threats" - why?
How a controversial genetic method could delete the malaria virus from mosquitoes. And, why Iranian migrants stuck on the border between Greece and Macedonia have sewn their lips together to protest against not being allowed to continue their journey.
Last on
Tue 24 Nov 201506:06GMT
BBC World Service except East Asia & South Asia
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- Tue 24 Nov 201506:06GMTBBC World Service except East Asia & South Asia
