Global Warming is a major problem which our environment faces today terribly. This global warming is caused due to Greenhouse Effect which is a condition in which Earth’s heat trapping increases more from the normal levels. Climate change, devastation of the ecosystem, melting ice over Arctic and Antarctic regions, negative impacts in the agricultural sector are just the problems caused by global warming. Many damages have been caused by this phenomenon. Policies on global warming are made each day. Global average temperature rose significantly during the past century. The prevailing scientific view is that most of the temperature increases since mid-20th century has been caused by increases in atmospheric greenhouse gas concentrations produced by human activity. Most scientists agree that planet’s temperature has risen 0.5 degree Celsius since 1900 and will continue to increase at an increasing rate. As a result, the world is getting warmer. The year 1990 was the hottest year in the last century.

There are both positives and negatives to global warming, although the good is heavily outweighed by the bad.
Global warming is important for agriculture. It's conceivable that the world's current breadbaskets could become even more productive as temperatures warm, increasing yields. Farmers accustomed to one harvest a year may even see two. What's more, a larger variety of crops could be grown in more locations than is currently possible. As the globe warms, however, high-latitude zones now on the verge of cultivation could become agriculture-friendly. More food for the world's people is certainly a good thing, although it must be acknowledged that climate change could at the same time transform other fragile regions such as sub-Saharan Africa into more of a desert than they are already.
Global warming will create much more usable land, as presently many areas of the