Researchers recently showed that migratory reed warblers depend on an internal geomagnetic map to guide them on their long-distance journeys. But it wasn't clear how the birds were solving the ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. When I was a kid living in southern New Hampshire, my family home was on the site of an abandoned farmstead consisting of ...

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THE excellent article by Mr. Broun in a recent number of NATURE puts before us in a very clear manner the strong grounds that we have for believing in a true connection between sun-spots and ...

THE first half of this book contains a good deal of information, and some inquiries connected with the question of the secular variations in the magnetic elements. The author, on the supposition that ...