In this outdoor activity, your class will go on a bug hunt and become zoologists. They will come up with their own classification systems to sort common invertebrates into groups. This activity can be ...

There are millions of different types of living things on Earth. In order to keep track of them all, scientists put living things into groups based on characteristics that they have that are the same.

The River Communities Group has a long history of developing bioassessment methods. The River Invertebrate Prediction And Classification System (RIVPACS), the standard Water Framework ...

The state fossil of Illinois is a strange creature with stalked eyes and a long nose-like appendage with teeth, dubbed the “Tully monster.” Specimens typically measure just 15 centimeters (about 6 ...