Global warming raises concerns

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New Delhi: Change is all around us. But the changing weather phenomenon has become a fear-factor for environmentalists all across the world. The reason attributed to rising temperature of earth’s surface is the rising level of carbon dioxide in atmosphere.

"Things are changing in an uncertain way. The problem is not that things are changing. But the problem is that the change itself is unpredictable," Ministry of Earth Sciences Secretary Harsh K Gupta says.

So the climate is changing and some people suggest the pace of that change is affected by human activity.

According to scientists, our earth experienced an ice age, 3,000-years ago the evidence of which can be found in the polar ice caps.

Long columns of ice extracted from deep within the permafrost that covers the poles has shown that carbon dioxide levels have been steadily increasing for the last 800,000 years.

"Global warming will result in warming of the polar ice caps and rising of the sea level. Some areas might get submerged while others will experience higher rainfall and subsequent floods," Director National Centre for Antarctic and Ocean Research, Dr Rasik Ravindra says.

Global warming and increased levels of carbon dioxide in the atmosphere has created a stir. Scientists are still trying to gauge the impact it has had on our weather phenomenon.