It's estimated the red cloud of heavy metals is now affecting a 30km (19-mile) stretch of the River Danube.

BBC: Toxic sludge carpets homes in Hungary

The River Danube - already swollen to record levels - burst its banks in the capital Vienna on Tuesday.

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The government froze plans to finish the plant at Belene last year, when work at the site on the southern bank of the River Danube was already well under way.

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Properties of photons - particles of light - have already been teleported across the River Danube and he predicts that we will be teleporting molecules within the decade, and eventually to the moon.

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Hotel Skala is a good-value stay in the town of Zemun, a five-minute walk from the banks of the Danube river.

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The company also does an Alaskan version of the trip, which left July 28, and is planning a European trip on the Danube River for May 2, 2013.

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All life in the Marcal river, which feeds the Danube, has been "extinguished".

BBC: Hungary sludge death toll rises after two bodies found

Tonnes of cyanide residue poured from a Romanian gold mine into the Tisza river in Romania, and were then washed into the Danube and finally the Black Sea.

BBC: Minister takes the Danube plunge

"The Marcal river is dead, " said Tibor Dobson, spokesman of the Hungarian Disaster Management Agency - a reference to a smaller river which flows north from the disaster area towards the Danube.

BBC: Toxic sludge carpets homes in Hungary

Once the track reopens at the end of this month, and for barely a euro, you can ride the number 19 or 41 tram along the western bank of the Danube all the way to Gellert Square, with an excellent view of the river and the Pest embankment.

BBC: A Danube-led tour of Budapest