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This site includes a simple animation of a hydrogen fuel cell.

Following the earthquake and tsunami in Japan, we discuss what is causing problems at the nuclear reactors in Fukushima. Explains the relevance of hydrogen, iodine, boron and zirconium.

So what exactly is a fuel cell, anyway? Why are governments, private businesses and academic institutions collaborating to develop and produce them? Fuel cells generate electrical power quietly and efficiently, without pollution. Unlike power sources that use fossil fuels, the by-products from an operating fuel cell are heat and water. But how does it do this?