The Prince of Wales and the Duchess of Cornwall have sent their "most heartfelt thoughts and sympathy to the families of those who were lost or injured in Friday's truly shocking helicopter accident in Glasgow".
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Flood warnings and alerts are in place for Scotland and northern England, while high temperatures are set to continue further south.
The state recorded 331 new cases on Tuesday.
Researchers used the method to study why flocks of long-tailed tits segregate themselves into different parts of the landscape.