Tuesday, April 24, 2012

Global warming & climate change...by Green Yatra

What does the term global warming mean?
Global Warming describes the current trend in average temperatures around the world that is increasing as a result of human activity.
Using temperature measurements from historical records and current land and sea stations, in conjunction with satellite data; any doubt as to whether our planet is warming has been dispelled. Sea ice is retreating, glaciers are melting, species are migrating or disappearing and spring temperatures are arriving earlier each year.

What is the greenhouse effect and what is its impact?
The Greenhouse Effect is related to global warming; it's the reason why excess heat from the surface of the Earth isn't dispersed into space. The glass on a greenhouse allows one type of radiation in, while reducing the amount of another type that can escape; causing the interior of the greenhouse to remain warm. This is what we are experiencing on our planet. Gases such as carbon dioxide and methane act as the glass; allowing solar radiation in, but preventing heat from escaping.

Are human activities are linked to global warming?
Yes, just about everything connected with modern society is a contributor. The cars we drive spew carbon dioxide into the atmosphere, as does coal powered electricity generation, as well as production processes for many of our goods. Even the millions of livestock we keep for food play their part by producing methane.

What is the solution to it? Are planting trees part of the answer to global warming?
During parts of a day, trees ingest carbon dioxide and produce oxygen. Mass deforestation has seriously compromised our planet's carbon dioxide recycling and conversion system. Trees are only part of the answer, we need to reduce our consumption and also commission more green energy resources such as solar, wind, and geothermal electricity production. By buying green tags to offset your cars emissions and the emissions generated by your electricity supply, it helps investment into and supply of green energy. 

visit www.greenyatra.org for more notes and information

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