Fall monarch migration is a yearly miracle
November 5, 2012
Dr. Lowman’s latest Nature’s Secrets column in newsobserver.com: We left the endless urban sprawl of Mexico City at 6 a.m., along bumpy roads in the mountainous state of Michoacán. It was hard to believe that only four hours from 20 million Mexicans is a winter haven for America’s entire population of monarch butterflies (Danaus plexippus). […]