When we start to detect cancer cells, with precision, when they are but a few cells in size, eradicating them will be relatively easy.

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But building a giant battery using dry-cell technology would require thousands of individual cells - about the size of a soft drinks can - to be strung together in a massive installation.

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Sharp reckons this will enable it to produce cells that are the same size as the lithium-ion batteries used in mobile devices, but which can run those devices for much longer.

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He is creating computer simulations to model the liver, so optimum channel size, flow rate and density of cells can be calculated as accurately as possible, before the artificial liver is constructed in the laboratory.

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He puts the cells in one of three dozen refrigerator-size incubators operating at 98.6 degrees, where they will grow into the main component of Lucanix, a cancer vaccine he developed.

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Or this: If you could cover an area about the size of Massachusetts in the Southwest U.S. entirely with solar cells, you could generate enough electricity to quench America's need for electric power.

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These can be as tiny as a millionth the size of a grain of salt which can amount to as little as a few cells of skin or sweat left in a fingerprint.

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