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International Sea Ice Day: Global activities — September 21, 2007

Here's a map of the most recent 200 places where schools and science centres have marked International Sea Ice Day.

Complete list of all balloons

Launch your own virtual balloon — add your own marker on the map. Here are instructions.

Get code to embed this map on any web page.

Both the KML button on the map and this link show you the most recent balloons on Google Earth. (Download Google Earth if you haven't already.)