The Dangers of Rocks

Causing disappointment and vertigo left and right

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If you’re tired of fretting about swine flu, here’s something else to think about: dislodged “ear rocks” — loose crystals made of calcium carbonate that can cause dizziness. These little guys are usually valuable, helping us stay balanced, until an injury or virus triggers a “rock slide.”

Also in today’s links: a levitating air conditioner, horse surgery, and more.