But he came around to the idea of the sanctuary, in part as he saw the potential for tourism. He began working with conservationists from the World Wildlife Fund and scientists from around the world. He created a Twitter account where he posted videos of himself in a cloud of monarchs, encouraging visitors to witness the magic. He posted the last one hours before he disappeared.

—Kevin Sieff, in “Homero Gómez González, Mexico’s monarch butterfly defender, found dead”