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It was to mark a year since a massive blaze in Paris nearly destroyed one of the world's most revered monuments.
Prosecutors have been given more time to question two suspects over a horrific fire at a building in Strasbourg that left five dead and seven injured.
Around 60 fire trucks raced to the 12-storey apartment block as smoke and flames spread through the building.
Sydney has been hit by its heaviest rain in 30 years, bringing widespread flooding.
Matches at the Australian Open may be suspended if air pollution from the recent wildfires poses a risk to the players' health.
A hypnotic animation produced by Copernicus' European Atmospheric Monitoring Service shows how Australian fires have generated so much smoke that it has gone around the world, back to Australia
Croatia's PM has been to the scene
A funeral service was held on Tuesday in Sydney for a volunteer firefighter who died battling blazes in Australia.
A fire started on Monday night at London's KOKO club, a landmark of the city's nightlife, and was controlled by the London Fire Brigade.
People are determined to keep going in the face of tragedy.
Prime Minister Scott Morrison said 23 people have now died in the wildfires so far this summer.
Helicopters battle raging bushfires in Australia
The devastating fire broke out early on Sunday morning.
Protesters burned tyres and blocked some roads on November 24 in the southern city of Basra, preventing government employees from reaching offices
The fire department said no one had been injured and that all guests and employees had been counted.
A massive fire broke out at a shopping complex in the Nigerian city of Lagos on Tuesday
The blaze engulfed the top section of a building in the popular Balogun Market