Climate change: What we do ? and don't ? know

There is much we do not understand about Earth's climate. That is hardly surprising, given the complex interplay of physical, chemical and biological processes that determines what happens on our planet?s surface and in its atmosphere.

Despite this, we can be certain about some things. For a start, the planet is warming, and human activity is largely responsible. But how much is Earth on course to warm by? What will the global and local effects be? How will it affect our lives?

In these articles, Michael Le Page sifts through the evidence to provide a brief guide to what we currently do ? and don't ? know about the planet's most burning issue.

Source: http://feeds.newscientist.com/c/749/f/10897/s/19868848/l/0L0Snewscientist0N0Cspecial0Cclimate0Eknowns0Eunknowns0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story01.htm

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