stream running through well-manicured yard with a small footbridge overStreams in the Seattle area, whose population has exploded in recent decades, are nevertheless showing signs of improving health, Isabella Breda writes for the Seattle Times. Recent research by King County demonstrates that populations of aquatic invertebrates are becoming healthier in many of the area’s streams, and only one has gotten worse. She explains how, and why, scientists catalog the juvenile insects, freshwater clams and other critters in streams to monitor the waterway’s health, and talks to experts about how the area could have improved this environment’s health despite rapid-fire development. Photo: Sage Ross via Wikimedia Commons