Human-induced global warming is real, according to a recent U.S. survey based on the opinions of 3,146 scientists. However there remains divisions between climatologists and scientists from other areas of earth sciences as to the extent of human responsibility.
A survey of more than 3,000 scientists found that the vast majority believe humans cause global warming.
Against a backdrop of harsh winter weather across much of North America and Europe, the concept of rising global temperatures might seem incongruous. However the results of the investigation conducted at the end of 2008 reveal that vast majority of the Earth scientists surveyed agree that in the past 200-plus years, mean global temperatures have been rising and that human activity is a significant contributing factor in changing mean global temperatures.