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Scientists worried as Arctic has record ozone loss

An ozone hole five times the size of California opened over the Arctic this spring, matching ozone loss over Antarctica for the first time on record, scientists said on Sunday. Formed by a deep chill over the North Pole, the unprecedented hole at one point shifted over eastern Europe, Russia…

Global warming: New study challenges carbon benchmark

The ability of forests, plants and soil to suck carbon dioxide (CO2) from the air has been under-estimated, according to a study on Wednesday that challenges a benchmark for calculating the greenhouse-gas problem. Like the sea, the land is a carbon “sink”, or sponge, helping to absorb heat-trapping CO2 disgorged by the…

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