Taylor founded a nonprofit called Monarch Watch at the University of Kansas 30 years ago, and so far it's helped tag more than two million of them. Anderson Cooper: How do you tag a butterfly that ...

This week on 60 Minutes, correspondent Anderson Cooper reports on the migration of the monarch butterflies ... who runs tour groups to the butterfly reserve. He has traveled the world in search ...

If there is no bird more American than the eagle, there is no butterfly more American than ... cities are now critical waystations in the monarch’s cross-continental migration.