ideastream's Listening Project finds that Northeast Ohioans consider our parks and Lake Erie to be the region's top asset, and the environment one of our biggest challenges. So we are especially interested in bringing you this story. The Cuyahoga Valley National Park comprises over 30 thousand acres of natural habitats teeming with life - but exactly which species the park contains, and how many, was a mystery until last week, when the park and a lot of Northeast Ohio volunteers participated in a special national event.