We have lots of ways to boil water without the expense and danger of nuclear reactors.

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Farmers have plenty of water for irrigation from wells, but the expense is a killer.

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The problems, of course, include the expense of building platforms in deep water, servicing them and building underwater transmission to bring the power to land.

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Critics of existing scrubber technology however point out that the technology only removes the toxic chemicals from the atmosphere at the expense of depositing them in the ocean as contaminated waste water.

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In the developing world they do it because that is often the only water fit to drink, and for the poor it is usually a significant expense.

ECONOMIST: It must also be clean

No longer does an Electrolux Aquaguard reseller for instance, have to employ mechanics to service the water purifiers when simple product training (with the market development funds provided by the manufacturer) avoids this extra expense and provides coverage in areas that could not be physically reached prior, all with zero impact on his own payroll.

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