| Did
you know that water vapour is the most common greenhouse gas? But there
are others that are very important too. Some occur naturally and some
come from human activity.
In the last century,
carbon dioxide levels in our atmosphere increased by more than 25%.
The six hottest
years in recorded history have all occurred in the last decade.
Scientists predict
that in 50 years the Earth will be 3-5 degrees hotter than it is today,
leading to the melting of far larger chucks of polar ice caps, and a rise
of up to 14 feet in global sea levels. This could cause some islands to
disappear.
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