photo: (CC) Gaetan Lee
Sailors, fishermen and cruise passengers should be on the alert. If anybody spots a yellow rubber duck bobbing on the ocean waves, Nasa would like to know.
The US space agency has yet to find any trace of 90 bathtub toys that were dropped through holes in Greenland's ice three months ago in an effort to track the way the Arctic icecap is melting. Scientists threw the ducks into tubular holes known as "moulins" in the Jakobshavn glacier on Greenland's west coast, hoping they would find their way into channels beneath the hard-packed surface, to track the flow of melt water into the ocean.
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