On the more modern coal plants like fluidized bed type plants that are already in service, there are several alternatives.

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"I think people are seeing that there is a need to change on Anglesey and are accepting that we can't continue with this bed-hopping type politics that's been going on over the years, " he said.

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Between classes, on the bus or before going to bed at night, he would type single sentences into his phone's tiny keypad, uploading each one straight to the mobile social networking site Mobage-town.

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Who wouldn't want their hotel to know, without even asking, what type of pillow to leave on the bed, which magazines to leave on the coffee table, what brand of juice to put in the mini-bar?

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Yet the most compelling aspect of this documentary is what it reveals about Mr. Allen's process, starting with the scraps of paper he spreads out on his apartment bed to show us how he collects and sorts through ideas before sitting down to type a script.

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For example, one type of seagrass may process nutrients more effectively than other types, so a bed devoted entirely to the talented seagrass might be expected to conduct this processing better than a mixed area.

ECONOMIST: Marine biodiversity