USA to curb CFC replacements as global warmers

The USA is set to become the first country to regulate the use of hydrofluorocarbons (HFCs), gases being promoted as substitutes for the CFCs, on the grounds of their contribution to global warming. No regulations are yet in sight in Europe, but UK officials have also identified the "greenhouse" potential of the HFCs as an issue to be addressed in the forthcoming national strategy on greenhouse gases.

The US Environmental Protection Agency (EPA) was directed by President Bill Clinton to press ahead with its controls on HFCs in his Climate Change Action Plan, published in mid-October. A week later, EPA officials created a stir at a conference on CFC alternatives in Washington by advising potential users of HFCs to be aware of their global warming potentials (GWPs) before buying.

HFCs do not contain chlorine or bromine and are therefore

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