The climate is changing, the earth is warming up and there is now overwhelming scientific consensus that it is happening and human-induced. With global warming on the increase and species and their habitats on the decrease, chances for ecosystems to adapt naturally are diminishing. Many are agreed that climate change may be one of the greatest threats facing the planet. Recent years show increasing temperatures in various regions, and/or increasing extremities in weather patterns.

The main reason being burning of fossil fuels like coal, oil and natural gas, along with accelerated land clearance has led to unprecedented levels of greenhouse gas emissions. Nearly 60-70% of GHG emission is through use of fuels in industries. Some GHG such as hydro fluorocarbons, methane, and nitrous oxide are released as bye product of certain industrial process, which adversely affect the ozone layer, leading to global warming.