A model of waves in a dispersive puddle, after a raindrop hits. The top three figures show what happens after a drop hits the puddle, with arrows indicating the passage of time.

Now you can find out not only where a raindrop goes, but you can join it on its journey to the ocean (or other large water body) with a mesmerizing interactive map called River Runner.Created with ...

CrowdScience listener Eleanor was lying in bed one rainy evening, listening to the radio. She lives in New Zealand, but happened to hear a weather forecast that told her it was raining in the UK too.