Scientists remain unsure as to why glaciers speed up their movement in the summer months and it is hoped that the rubber ducks -- labeled with the words "science experiment" and "reward" in three languages, along with an email address -- will shed some light on the phenomenon.

CNN: Rubber ducks aid NASA study

In the name of climate change science, researchers at NASA have dropped 90 rubber ducks into holes of Greenland's fastest moving glacier: the Jakobshavn Glacier in Baffin Bay.

CNN: Rubber ducks aid NASA study