The seasonal increase results from tons of carbon dioxide, which had been frozen into a southern winter ice cap, returning into the atmosphere as southern spring turns to summer.

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Vaughan made his first-class debut for Yorkshire in 1993 and six years later won his first Test cap during England's winter tour to South Africa.

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Wearing a black wool cap pulled down against the biting chill of a Chicago winter morning, Vallas bounds up to the doors of tenements on the city's gritty South Side.

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Eva nodded, and this time she did smile, but Harley was already moving away, loping off toward the gate in his winter coat, the snow clinging to his coat sleeves and the wool cap as he stepped out onto the pavement and headed across the green.

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