The falcon fledglings living on top of the university's Cathedral of Learning left the nest earlier this month, but are likely to linger in Pittsburgh's Oakland neighborhood.
An event focused on interactive public art led a group to Turtle Cove along the Allegheny River. Participants collected trash and constructed sculptures.
Through Pennsylvania Trout in the Classroom, teachers and students raise trout to learn about not only the life cycle, but also coldwater conservation.
Parts of the river have low dissolved oxygen levels caused by ammonia discharges from wastewater facilities. The announcement comes after environmentalists took legal action to speed up the process.