INTERACT: Polar illusion - sneaking through nature's tricks
Polar regions hold many mysteries, including some of the last places on Earth yet to be reached by man. Scientists do their best to see the invisible, without being led astray by appearances, which tend to be particularly deceptive in ice-covered lands. Extraordinary polar conditions favour illusion, which tricked the Vikings and even today – initially at least – might make us think of aliens. As usual, however, bewildering though they are, the phenomena can all be explained by science.
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