Chicago may not have much variety in the way of wildlife – pigeons, rats, squirrels, the occasional cougar. But just around the bend of Lake Michigan's shoreline is one of the most biodiverse national parks in the country. Indiana Dunes National Lakeshore is rich in plant and animal species. Over the weekend, thousands of school kids, scientists and volunteers set out to count them. It's a 24-hour frenzy known as, the bioblitz.

Music Button: Barrett Martin & the Wayward Shamans, "Agbadza", from the CD Alchemy, (Fast Horse recordings)