Barcelona (Freddie Mercury and Montserrat Caballé song) peaking at number two in the UK, the Netherlands and New Zealand. In 2004, BBC Radio 2 listed Barcelona at number 41 in its "Sold On Song Top 100". Mercury had been a long-time fan of opera, especially favouring Montserrat Caballé. In 1986, he mentioned on Spanish television that he would be glad to see her in person. They had a friendly initial meeting in Barcelona in February 1987. Later, when the city had been chosen for the 1992 Summer Olympics, Caballé, a native of the city, was asked to help with producing a song for the games. She summoned
Mercury in fish plant emissions. Chlorine chemical plants use mercury to extract chlorine from salt, which in many parts of the world is discharged as mercury compounds in waste water, though this process has been largely replaced by the more economically viable membrane cell process, which does not use mercury. Coal contains mercury as a natural contaminant. When it is fired for electricity generation, the mercury is released as smoke into the atmosphere. Most of this mercury pollution can be eliminated if pollution-control devices are installed. Mercury in the United States frequently comes from power plants, which release about 50% of the nation's