Scientists from NASA are using rubber ducks to track glacial movement. They've dropped 90 ducks into holes in Baffin Bay's Jakobshavn Glacier. Each duck is labeled in three languages with an email address and a reward announcement. The scientists hope that people will find the ducks, and then send an email explaining where the duck was found. 

Scientists hope this experiment will show how water moves through ice and also lend some insight into why glaciers move faster in the summer.

It's not as glitzy and glamorous as a lot of other doings at NASA, but this just goes to show that sometimes simpler is better.