Researchers think that the carbon cycle turns over about 330 billion tonnes of carbon dioxide each year.

ECONOMIST: Two new satellites will monitor carbon-dioxide emissions

Researchers think that the carbon cycle adds up to the production of about 330 billion tonnes of carbon dioxide each year.

ECONOMIST: Two new satellites will monitor carbon dioxide emissions

Natural gas emits 29% less carbon dioxide than oil and 45% less than coal, and it can be used in high-efficiency combined cycle power stations.

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