The Olympic flame has been lit in an ancient ceremony in Olympia, Greece, the birthplace of the Ancient Games.
The flame will travel around Greece before arriving the UK on May 18.
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At least one person has died and 18 homes have been destroyed as wildfires rage through southern California.
Slightly cooler temperatures will replace the recent muggy weather while some areas will see heavy rain.
Andre Greipel won the final stage of the 2016 Tour de France as Chris Froome crossed the line arm-in-arm with his Team Sky team-mates