Sue Halpern: "Four Wings and a Prayer" (Pantheon)

http://thedianerehmshow.org/shows/2001-06-21/sue-halpern-four-wings-and-prayer-pantheon
Sue Halpern: "Four Wings and a Prayer" (Pantheon)

Every year, millions of monarch butterflies migrate from Canada and the northeastern United States to one 50-acre plot in Mexico. Scientists still don't fully understand how and why the butterflies return to the same spot year after year...

Every year, millions of monarch butterflies migrate from Canada and the northeastern United States to one 50-acre plot in Mexico. Scientists still don't fully understand how and why the butterflies return to the same spot year after year. Sue Halpern writes about this enduring mystery in her new book.

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Sue Halpern

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