article on global warming
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Global warming is a long-term rise in the average temperature of the Earth's climate system, an aspect of climate change shown by temperature measurements and by multiple effects of the warming.The term commonly refers to the mainly human-caused observed warming since pre-industrial times and its projected continuation,though there were also much earlier periods of global warming. In the modern context the terms global warming and climate change are commonly used interchangeably,[6] but climate change includes both global warming and its effects, such as changes to precipitation and impacts that differ by region.Many of the observed warming changes since the 1950s are unprecedented in the instrumental temperature record, and in historical and paleoclimate proxy records of climate change over thousands to millions of years.
The average temperature of the earth's atmosphere is gradually increasing. This is called global warming. Other gases like methane, nitrous oxide and water vapour also contribute towards this effect . Global warming can cause sea levels to rise dramatically. In many places , coastal areas have already been flooded. Global warming could result In wise ranging effects on rainfall patterns , agriculture , forests , plants and animals. Majority of people living in regions which are threatened by global warming are in Asia. A recent climate change report gives us only a limited time to keep the greenhouse gased at the present level . Otherwise , the temperature may rise by more than 2 degrees Celsius by the end of the century , a level considered dangerous.