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Click to help become part of the solution to global warming     The Earth is getting warmerPoor polluted overheated planet

Hotting up
Hot sunThe sun is getting hotter. It is also incredibly old -- about 5000 million years old! One day it will blow up but that won't be for another 5000 million years or so. But the Earth's climate seems to be heating up much much faster than can be explained by the sun making more heat. And the reason seems to be you people and your machines.

Earth is getting hotter
... because of pollution
Almost all machines use oil, gas or coal. All of them produce pollution -- you know, the smelly stuff that comes out of car exhaust pipes and factory chimneys, that sort of thing. Much of this is a gas you can't see called carbon dioxide. It's this gas which seems to be the main cause of the trouble.

  Jokey Pandora's BoxOpening Pandora's carbon box
Pandora was a woman who figured in one of the Greek myths. In the myth, the gods gave her a mysterious box. They'd put something nasty in the box and told her never to open it. But she was overcome by curiosity and opened the box. Out flew horrible stuff like plagues, sorrow and misery. She tried in vain to shut the lid but it was too late: the horrors were free.
It's a little like that with fossil fuels. For millions of years, the planet has been tucking away its carbon in the form of coal, oil and limestone. This natural sequestering  of carbon and burying it deep in the Earth's crust has kept the climate machine in balance. Too much carbon means global warming; too little means cooling. Humans have opened the planetary Pandora's carbon box and let out fossil fuels on a vast scale. Burning them releases the carbon they contained back into the air as carbon dioxide, CO2.
 


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