Reb Daly (left) and Kelly Wrighton (right), microbial ecologists at Colorado State University, Fort Collins, on the Cache La Poudre river. (Massie Ballon)
Reb Daly (left) and Kelly Wrighton (right), microbial ecologists at Colorado State University, Fort Collins, on the Cache La Poudre river. (Massie Ballon)