#15 in the Science Buzz series of caches.
This cache is placed along the Healthy River Healthy You podcast route being run by the Mississippi National River and Recreation Area (which has a visitor center in the Science Museum of Minnesota’s lobby and is FREE to visit).
You can either stop by the Mississippi River Visitor Center in the Science Museum of Minnesota lobby to borrow a free pre-loaded iPod or download the podcast from their web page, above. It can also be found on iTunes.
So, as you geocache you can learn more about the river. Or, as you learn more about the river you can geocache too!