In front of a forest screen background, Jessica Moore tells a story of a walk in the woods. But it’s not just a walk. One by one, the Northwest Trek education curator pulls up “clues” she found on her walk: a feather, some quills, a photo of a pawprint etched with claws. “Okay,” she says briskly, smiling into the camera. “Who’s ready to be a Northwest wildlife investigator?” On her own laptop screen, young faces smile back and raise eager hands. It’s time for Online Wildlife Academy, the park’s new virtual nature science program that’s offering a lifeline to beleaguered …