双语趣听精彩世界 第98期:全球变暖谁的错?

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　　全球变暖谁的错?

　　Daily Mail: Was the Earth in a period of global warming or cooling before the 20th century?

　　Attempting to answer this question has thrown up a conundrum¹ for scientists, with some studies showing a warming trend, while others suggesting it cooled until humans intervened².

　　Now a new study hopes to settle the issue by arguing that data points to the fact that Earth's climate has been warming over the past 10,000 years - long before human activity is thought to have changed the climate.

　　It argues that previous research that showed a cooling trend was wrong because it used contradictory³ ice core⁴ data.

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