Pollution Essay: Major Causes Of Global Warming

1. Major causes of Global Warming

It is common perception that global warming is a result of pollution and increased production of green-house gases due to the callous behaviour of humans. Most people are unaware of the large impact of the other natural causes of global warming. Global warming being a very complex phenomenon, is most likely an outcome of the interaction of both natural and man-made causes.

Global warming being a serious issue for our planet, we should be aware of the natural as well as human-driven causes. Some of these causes are as follows:

1.1. Natural

• Orbital Change: The earth’s climate has changed in the past due to shifts in the earth’s orbit. We can take for example the Sahara desert which transformed into a barren desert from a fertile grassland due to change in the earth’s orbit. This has been widely accepted in the scientist community who believe that the change in the amount of sunlight received by Africa due to orbital shift was the primary reason for the formation of Sahara desert.

It is said that the Earth’s orbital tilt varies roughly between 22 to 25 degrees every 41,000 years causing major impact on the planet’s climate. But, some school of scientists are of the opinion that the current changes in the climate may cause changes in the Earth’s axial tilt warning of a possible

We all know that the carbon dioxide absorbs infra-red energy emitted from the earth’s surface, preventing it to be re-reflected to the outer space. The release of carbon dioxide from the burning of gasoline to run our cars, buses, trucks and other modes of transport. Even the generation of electricity requires coal which is the largest producer of carbon dioxide. The problem is increased in developing countries where coal is the only primary medium of energy generation. It will take time for such nations to become independent of the carbon emitting means of energy