I’m in Pacific Grove, California, for a few days where I’ve witnessed a part of what has been called one of the greatest natural events on Earth. In a large grove of eucalyptus trees called The Sanctuary, clusters of monarch butterflies cling like glowing autumn leaves to the branches. They arrive in late October to overwinter in the mild climate here, escaping the harsher winters in the north. They travel vast distances to reach the California coast in the west and the mountains of Michoacan in Mexico in the east. Hardy butterflies… Read More