Endangered Species photo
SHARE

We may earn revenue from the products available on this page and participate in affiliate programs. Learn more ›

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.