It's hard to open a newspaper or turn on a television today without hearing about global warming. Climate change is a subject that has many people feeling extremely uneasy, but what is it all about?
If you're still scratching your head over terms like 'greenhouse gas' and 'carbon emission,' then this video from National Geographic should be able to shed some light and further your understanding of one of the greatest challenges facing our world today:
Click here to see our global warming debate.
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