The Cleanest Line

Emilene Ostlind

Emilene Ostlind and Joe Riis spent two years exploring the migration corridor to document it in stories and photographs. “Perilous Passages,” their High Country News cover story on the migration, received the National Association of Science Writers’ 2012 Science in Society award and the 2012 Knight-Risser Prize for environmental journalism in the West. Find the story on Emilene’s website and see more photographs at