Artifacts from the Iron Age have revealed an intense historical magnetic anomaly in the Middle East. Could using a similar ...

The poles can flip over the course of hundreds or thousands of years, and this can happen at random, with intervals ranging anywhere from 10,000 years to 50 million years or more. Around 41,000 years ...

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Genetic variation articles from across Nature Portfolio Genetic variation describes the genotypic and phenotypic differences between individuals in a population, and between populations.

Natural variation in plants articles from across Nature Portfolio Natural variation in plants refers to the genetic diversity of a single plant species in the wild. Natural variation is a valuable ...

This article was originally published with the title “Variation of the Magnetic Needle” in Scientific American Magazine Vol. 10 No. 42 (June 1855), p. 331 doi:10.1038 ...

It is suggested that in many ferromagnetic materials there may occur particles distinct in magnetic character from the general matrix, and below the critical size, depending on shape, for which domain ...