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Solar eclipses – why do they happen?

17/03/2015 13:31

Written by Sheridan Williams

A solar eclipse will be visible in Svalbard and the Faroe Islands on 20 March 2015 – but why do they occur? Sheridan Williams explains all.

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What is the definition of Arctic?

28/03/2014 15:23

Written by Andres Umbreit

Andreas Umbreit discusses the competing definitions of this oft-disputed term.

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