Friday, May 24, 2013

Global Warming & Climate Change

What does the term global warming means?
Global Warming describes is current trend in average temperatures around the world 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 are its impact?
The Greenhouse Effect is related to global warming in that 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, but reduces the amount another type 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, 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, it planting trees are part of the answer to global warming?
During parts of a day, trees ingest carbon dioxide and produce oxygen. Mass deforestation has seriously compromized 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. 

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