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Brazil's oil boom runs into trouble as workers strike over the idea of auctioning the exploration rights to foreigners.

Too much caffeine in a New York caf茅? The shocking stunt to promote new horror film Carrie by scaring members of the public - we'll hear from the man who dreamed it all up.

We get the latest on Australian wildfires with guest Sean Turnell of Macquarie University in Sydney.

Also, art as investment? As the Frieze Art Fair starts up in London we have a special report and hear the risks to the artist of being bought up by speculators.