Global Warming

Topics: Carbon dioxide, Global warming, Greenhouse gas Pages: 3 (1229 words) Published: January 7, 2013
One of the greatest challenges earth is facing is Global Warming. The global warming hypothesis orginated in 1896 when Svante Arrhenius, a Swedish chemist, developed the theory that carbon dioxide emissions from the burning of fossil fuels would cause global temperatures to rise by trapping excess heat in the earth’s atmosphere.  The term “Global Warming” signifies the temperature of the earth’s neon- surface air. The change in climatic conditions is one of the impacts of global warming. It is directly impacting on rising sea levels and the melting of ice. It is a threat to life on earth. The effects of global warming have been increasing significantly for the past decades. Climate change, devastation of the ecosystem, water contamination, melting ice over Arctic and Antarctic regions, negative impacts in the agricultural sector are just the problems caused by global warming. The reason behind this is human activities that lead to release of greenhouse gases. The concentration of greenhouse gases has significantly increased since 20th century. Some Scientists believe that there is an increase of 0.5 Celsius in earth’s temperature since 1900 and will continue to increase. The year 1990 was said to be the hottest year in the last century. We Human Beings have created an imbalance between life and nature that has led to flood, cyclones, landslides, tsunami, drought, etc. If this imbalance continues, soon our life on earth would be difficult. The increase of Carbon-dioxide in air is one of the reasons for warming the earth’s surface. The most significant greenhouse gas is actually water vapor, not something produced directly by humankind in significant amounts. However, even slight increases in atmospheric levels of  carbon dioxide (CO2) can cause a substantial increase in temperature. When the earth’s surface warms up it will eventually lead to evaporation of water. Water vapor, itself is a greenhouse gas. It is believed that the increase in CO2 in the atmosphere...
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