Captain Eugene A. Cernan, Apollo 17 Mission Commander, said Neil Armstrong was a "world icon, a nation hero of unimaginable proportion, and a legend whose name will live in history long after all here today have been forgotten."
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Davis wants the UK wants to maintain "close, even-handed co-operation" with EU regulatory authorities after it leaves the bloc.
The devices cause dogs to yelp, squeal, crouch and exhibit physiological signs of distress.
A frost-free night for most but chillier than previous nights.