According to The Register the effect shows up even with varying sun and wind angles.
But actually it's obvious. The cows are worried about being got rid of due to their methane increasing global warming. So they're trying to re-invent themselves as fridge magnets.
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timeasmymeasure
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Date: 2008-08-26 01:12 pm (UTC)But actually it's obvious. The cows are worried about being got rid of due to their methane increasing global warming. So they're trying to re-invent themselves as fridge magnets.