Telegraph: The first study found that the hole in the ozone layer, caused by the use of CFCs, has prevented the melting of Antarctica even as the rest of the world warms. A separate study found that plants absorb more carbon dioxide under polluted skies, therefore slowing global warming. Scientists said the findings made it even more important to cut carbon emissions in the future as pollution from CFCs and other sources is expected to decrease. The survey of Antarctica by the …