Over the last few weeks bright orange and black butterflies have been returning to the Minnesota landscape. As ever the Monarchs look remarkably fresh for having flown a long and circuitous route from their winter homes in Mexico. That journey has long been a source of fascination and mystery to humans. Every year volunteers, many of them school students, tag thousand of butterflies in the hope they will be captured in Mexico, and reveal a little more about how the Monarchs make their trip. For her book "Four Wings and a Prayer" author Sue Halpern spent almost a year travelling the Monarch flyways meeting the scientists and others who are trying to piece the puzzle together. She told Minnesota Public Radio's Euan Kerr her fascination began in Mexico. Author Sue Halpern will read from her book "Four Wings and a Prayer" at the Como Lakeside Pavilion on North Lexington Avenue in St Paul tonight at 7.

This file was digitized with the help of a grant from the National Historical Publications and Records Commission (NHPRC).