C4 plants often absorb CO2 from the air in one type of cell and then convert it to sugars through photosynthesis in another.

ECONOMIST: Genetic modification

He wants the United States to return Yokota Air Force base in the far western suburbs or convert it to partial civilian use.

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Beenz offers a kind of loyalty programme resembling an air-miles scheme, and is now planning to provide debit cards allowing users to convert their beenz into cash.

ECONOMIST: A survey of online finance

Abdul-Aziz al-Abdi, a retired Air Force pilot, pumped several bullets into Mr. Nahari after the Hebrew teacher dismissed his demands that he convert to Islam.

WSJ: Secret Mission Rescues Yemen's Jews