The Beijing Weather Modification Office gained fame around last year's Beijing Olympics for trying to drain clouds near the city ahead of Aug. 8 Opening Ceremonies.

WSJ: Blizzard Renews Storm Over China Making Snow

In mammals, this kind of epigenetic modification has been assumed to last only during the life span of a particular animal, because such changes are usually erased in the sperm and egg cells.

ECONOMIST: Genes are not all there is to heredity

One company, iPhoneSIMfree, said last month it had developed a software-only modification it planned to sell only to iPhone vendors.

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