20th-century warming 'unmatched' in 2,000 years.
World temperatures rose faster in the late 20th century than at any other time in the last 2,000 years, according to research released Wednesday which experts said undermines climate deniers' questioning of mankind's role in global warming.
While average global temperatures are currently around one degree Celsius hotter than pre-industrial times, there have been a number of periods of cooling and warming over the centuries. The findings are clear: at no point in modern human history did temperatures rise so quickly and so consistently as in the late 20th century -- the period where the world's post-war, fossil fuel-powered economy reached unprecedented heights of production and consumption.Scientists have long known of periods of unusual climate activity, such as the Little Ice Age, a centuries-long epoch where northern Europe experienced colder winters on average than at the start of the 20th century.
They found that pre-industrial temperature fluctuations were largely driven by volcanic activity. But they also concluded that humans had never witnessed such rapid global warming as in the latter part of the 20th century.
Singapore Latest News, Singapore Headlines
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