The Billy goat urinates all over his belly, chest, and beard to attract a mate. Similarly, a male porcupine sprays his urine in different directions—and when he finds a mate, he urinates all over her.

Annually 17 tons of gold is used to make wedding rings in the United States.

In the Durango desert, in Mexico, there's a creepy spot called the "Zone of Silence." You can't pick up clear TV or radio signals. And locals say fireballs sometimes appear in the sky.

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