12 Jan '13, 5pm

What is climate change? #climate

What is climate change? #climate

Life on Earth is possible because of the warmth of the sun. While some of this incoming solar radiation bounces back into space, a small portion of it is trapped by the delicate balance of gases that make up our atmosphere. Without this layer of insulation, Earth would simply be another frozen rock hurtling through space. Carbon dioxide (CO2) is the most important gas in this layer of insulation. Carbon is stored all over the planet — in plants, soil, the ocean, and even us. We release it into the atmosphere as carbon dioxide through activities such as burning fossil fuels (coal, oil and gas) and cutting down trees. As a result, today's atmosphere contains 32 per cent more carbon dioxide than it did at the start of the industrial era. We have released so much carbon dioxide and other greenhouse gases that our planet's atmosphere is now like a thick, heat-trapping blanket. ...

Full article: http://www.davidsuzuki.org/issues/climate-change/science/...

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