A stunning blue meltwater lake that formed on the Arctic ice in mid-July has disappeared, draining through a crack in the underlying ice floe.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/T6zMo9Us5PM" height="1" width="1"/>
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A stunning blue meltwater lake that formed on the Arctic ice in mid-July has disappeared, draining through a crack in the underlying ice floe.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/T6zMo9Us5PM" height="1" width="1"/>