Biologist Shaun Clements stands in the winter mist in a coastal Oregon forest. He’s holding a small vial of clear liquid.
“We should be safe mixing it now, right?” he asks his colleague Kevin Weitemier above the sound of a rushing stream a few feet away.
Weitemier brings a second vial, full of stream water. In deliberate, seeming choreographed movements, usually associated with ritual, they pour the liquid back and forth between the small containers to mix -- two, then three times — never spilling a drop.
Clements looks down at the clock. It’s 12:29 pm.