PAenvirothon – New Design, Interactive Resources. Study for the ENVIROTHON on the go! In depth information on wildlife, soils, forestry and aquatics with quick links to PA State Envirothon website resources to help you prepare for Regional and State events. Bring nature into the classroom with live bird, frog and wildlife calls and videos. Explore nonpoint source pollution through an interactive model or watch a Soil Scientist discuss important soil facts.