How Do Animals Keep from Getting Lost?

Every three years, the Royal Institute of Navigation organizes a conference focussed solely on animals. This April, the event was held southwest of London, at Royal Holloway College, whose ornate Victorian-era campus has appeared in “Downton Abbey.” For several days, the world’s foremost animal-navigation researchers presented their data and findings in a small amphitheatre. Most of the talks dealt with magnetoreception—the ability to sense Earth’s weak but ever-present magnetic field—in organisms as varied as mice, salmon, pigeons, frogs, and cockroaches.

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