CLIMATE CHANGE " No challenge poses a greater threat to future generation then climate changes" - BARACA OBAMA. Climate change is an very serious and a huge problem for all of us .It affects everything from human health and food security to immigration patterns and water bodies which includes both the global warming driven by human emissions of greenhouse gases , and the resulting large-scale shifts in weather patterns. Though there have been previous climate variability and change , since the mid-20th century the rate of human impact on Earth's climate system and the global scale of that impact have been unprecedented. That human activity has caused climate change is not disputed by any scientific body of n...